Topic 'Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U' in forum 'D-Link' - dslreports.com http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22315498 en Fri, 10 Feb 2012 16:43:37 EDT Fri, 10 Feb 2012 16:43:37 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-24573556 thank u :can i do the same thing ON dsl-2640u or not !!!!
and if i cant how can i flush my D-LINK dsl 2640u]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-24573556 Mon, 26 Jul 2010 05:59:10 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-24261752 said by Ender3rd:

said by tipstir:

Why would you flash a router with code that doesn't get over written correctly thus the issues with the prior and the new. That's why there is the 30, 30, 30 or 90 reset method.

Good day!
Your hypothetical question and subsequent conclusion assume that I and others are experiencing a problem by following the manufacturer's procedure. That is simply not the case. The assertion that your 30 30 30 or 90 reset method should be standard procedure for everyone as a result of your unique experience is quite a stretch. When a new D-Link firmware core is flashed, the manufacturer's default settings are written into all user available hex addresses. This is done to accommodate hex offsets due to new features and functions inserted into the bios code.

I suppose I could flush my toilet 4 times after each use, and this procedure would also work just fine, but it's not necessary.

I'm not looking to get into this with you, but I am concerned that the forum has adopted this in a "sticky" that infers it should be standard procedure for all users. There are many valid ideas in this thread, mixed with misinformation and "cargo cult" practices. Personally, I'd rather see the manufacturer's recommended procedure placed in a sticky for quick reference by those looking for how to flash their D-Link hardware.

Peace,

Ender
This stinky is to help others with the router. That's it! ]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-24261752 Wed, 19 May 2010 02:34:41 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-24261749 said by Flashfox:

Hmm... this sounds a bit excessive to me. I agree that waving your hands over the router and saying the special incantation to "Steve Jobs-all mighty" should give you similar results. It might even produce an iPad... if you say the incantation loud enough (sorry, no Flash even with the incantation)
How do you come to that conclusion? ]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-24261749 Wed, 19 May 2010 02:33:40 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-24172767 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-24172767 Fri, 30 Apr 2010 01:29:36 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23839349 said by Ender3rd:

I am concerned that the forum has adopted this in a "sticky" that infers it should be standard procedure for all users.
Why infer, when the reason has been stated explicitly?
»Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23839349 Sun, 21 Feb 2010 19:24:03 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23838901 said by tipstir:

Why would you flash a router with code that doesn't get over written correctly thus the issues with the prior and the new. That's why there is the 30, 30, 30 or 90 reset method.

Good day!
Your hypothetical question and subsequent conclusion assume that I and others are experiencing a problem by following the manufacturer's procedure. That is simply not the case. The assertion that your 30 30 30 or 90 reset method should be standard procedure for everyone as a result of your unique experience is quite a stretch. When a new D-Link firmware core is flashed, the manufacturer's default settings are written into all user available hex addresses. This is done to accommodate hex offsets due to new features and functions inserted into the bios code.

I suppose I could flush my toilet 4 times after each use, and this procedure would also work just fine, but it's not necessary.

I'm not looking to get into this with you, but I am concerned that the forum has adopted this in a "sticky" that infers it should be standard procedure for all users. There are many valid ideas in this thread, mixed with misinformation and "cargo cult" practices. Personally, I'd rather see the manufacturer's recommended procedure placed in a sticky for quick reference by those looking for how to flash their D-Link hardware.

Peace,

Ender
--
Politicians are afraid of anything they don't understand. Unfortunately, they don't understand anything...]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23838901 Sun, 21 Feb 2010 17:24:20 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23815337 said by Ender3rd:

At what point are you supposed to sacrifice a chicken during this procedure? Seriously, non-volatile ram does not magically re-assert data after the first flush! One data clear-out is certainly sufficient to allow the new hex structure of a firmware upgrade to flash without old settings re-appearing. This looks like someone is having a good laugh at the thought of people "flushing" their RAM 9 times for absolutely no reason. Follow the manufacturer's suggested procedure and your firmware flashes will proceed without issue. Mine always have. The suggestion about using a UPS is an excellent one and very valid as a power interruption at any time during a flash can make for a challenging recovery adventure.
Been way doing other things and you guys are still at it. Just follow the directions. Very simple not complex. Wipe out the old code and replace it with the new one. Not a mad scientist method. Why would you flash a router with code that doesn't get over written correctly thus the issues with the prior and the new. That's why there is the 30, 30, 30 or 90 reset method.

Good day!]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23815337 Wed, 17 Feb 2010 02:52:01 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23775567 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23775567 Mon, 08 Feb 2010 23:31:23 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23771295 en.wikipedia.org/wiki/Cargo_cult···the_term]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23771295 Mon, 08 Feb 2010 09:19:09 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23770430 --
Politicians are afraid of anything they don't understand. Unfortunately, they don't understand anything...]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23770430 Sun, 07 Feb 2010 23:43:55 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23734597 said by nestrapez:

said by ninasky:

and I get my warranty back?
Sure just don't mention that you flashed it with the wrong firmware.
official firmware will be what issues
from the old firmware no trace left :) :) :)]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23734597 Mon, 01 Feb 2010 02:36:50 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23734577 said by ninasky:

and I get my warranty back?
Sure just don't mention that you flashed it with the wrong firmware.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23734577 Mon, 01 Feb 2010 02:20:56 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732867 said by ninasky:

and I get my warranty back?
think yes]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732867 Sun, 31 Jan 2010 17:11:37 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732859 said by www23:

said by ninasky:

said by www23:

All you need :)
»DIR-655 Firmware Downgrade 1.3xNA >> 1.3xRU IPTV Work
After I install that, can I install 1.21b05?
yes
and I get my warranty back?]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732859 Sun, 31 Jan 2010 17:09:54 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732837 said by ninasky:

said by www23:

All you need :)
»DIR-655 Firmware Downgrade 1.3xNA >> 1.3xRU IPTV Work
After I install that, can I install 1.21b05?
yes]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732837 Sun, 31 Jan 2010 17:05:40 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732760 said by www23:

All you need :)
»DIR-655 Firmware Downgrade 1.3xNA >> 1.3xRU IPTV Work
After I install that, can I install 1.21b05?]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732760 Sun, 31 Jan 2010 16:47:54 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732725 said by ninasky:

said by www23:

said by ninasky:

I have a EU version and installed NA version, but now I cant go back to EU version, I have reset it couple of times but it still dont go back to original 1.21EU.

Is there anyway to go back to its original firmware???
model router?
dir-655 a4 swedish version
All you need :)
»DIR-655 Firmware Downgrade 1.3xNA >> 1.3xRU IPTV Work]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732725 Sun, 31 Jan 2010 16:38:55 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732696 said by www23:

said by ninasky:

I have a EU version and installed NA version, but now I cant go back to EU version, I have reset it couple of times but it still dont go back to original 1.21EU.

Is there anyway to go back to its original firmware???
model router?
dir-655 a4 swedish version]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732696 Sun, 31 Jan 2010 16:30:45 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732605 said by ninasky:

I have a EU version and installed NA version, but now I cant go back to EU version, I have reset it couple of times but it still dont go back to original 1.21EU.

Is there anyway to go back to its original firmware???
model router?]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732605 Sun, 31 Jan 2010 16:09:09 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732313
Is there anyway to go back to its original firmware???]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23732313 Sun, 31 Jan 2010 14:52:14 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23602874 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23602874 Thu, 07 Jan 2010 01:11:27 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23595793 said by RoadRunner79:

so if my router is flashed wrong after doing this process do I install the original firmware? I have a dgl4300 most likely from the original first few years being sold and things were fine with 1.6 but I felt like using what I think are the last firmware updates that are for this model but now when I try to use say UPnP or QOS when I press save I get an error that says something about javascript and goes straight to login screen and it doesn't keep the settings I want to save.
Doing it this way you have to pay close attention doing it. Not me no cell phone chatting. I just say follow the directions to the letter from the first post. There is a lot of nahers but hey it works on all the Routers I've own.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23595793 Tue, 05 Jan 2010 21:36:21 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23523014 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23523014 Mon, 21 Dec 2009 05:10:44 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23523006 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23523006 Mon, 21 Dec 2009 05:00:48 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23516442

»www.youtube.com/watch?v=t6vOZS3-···index=37


;) :D
--
Patriotism is not waving a flag, it is living the ideals

I want to retire to the Isle of Sodor and ride the trains.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23516442 Sat, 19 Dec 2009 13:14:25 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23476898 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23476898 Fri, 11 Dec 2009 21:33:24 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23442573 said by Basher13:

There is no NVRAM ... it's an EEPROM.
flash-chip
wrong or corrupt value exists in the NVRAM

Recover from a Bad Flash
This can happen if a wrong or corrupt value exists in the NVRAM. Here simply clearing the NVRAM should solve the problem]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23442573 Sat, 05 Dec 2009 13:42:23 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23438022 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23438022 Fri, 04 Dec 2009 12:59:32 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23071899 said by Slides:

I'm amazed that this thread is stickied.
For one reason: It contains a valid reset procedure, including a variation helpful if firmware is corrupted.

The rest, I'll leave to the astute members to opine.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23071899 Wed, 23 Sep 2009 18:46:15 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23071596 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23071596 Wed, 23 Sep 2009 17:53:46 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23066047 said by mb:

said by MLGTWISTED:

I'm joining this really late, but what exactly does flushing out the NVRAM do and what is NVRAM? Im assuming it to be similar to cache-ing or cached information stored on the router, and it to just cleares it right?
NVRAM is non-volatile random access memory. Fancy words, but it is just memory that doesn't lose it's information when the power is turned off. Going through all such gyrations is absolutely not necessary UNLESS the firmware has been corrupted and needs to be re-flashed. It is unlikely that the device would run at all if the firmware was corrupted.
It works and doesn't harm the router. All brands it works on. I've tested go figure.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23066047 Tue, 22 Sep 2009 19:16:53 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23021254 said by MLGTWISTED:

I'm joining this really late, but what exactly does flushing out the NVRAM do and what is NVRAM? Im assuming it to be similar to cache-ing or cached information stored on the router, and it to just cleares it right?
NVRAM is non-volatile random access memory. Fancy words, but it is just memory that doesn't lose it's information when the power is turned off. Going through all such gyrations is absolutely not necessary UNLESS the firmware has been corrupted and needs to be re-flashed. It is unlikely that the device would run at all if the firmware was corrupted.
--
"When will they ever learn? When will they ever learn?"
Pete Seeger 1961

]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-23021254 Mon, 14 Sep 2009 13:28:32 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22991010 said by ibsteve2u:

Just a note:

Memory of any sort that will not accept a write, or memory of any sort that corrupts a write or a read sufficiently to cause a jump to a memory location that is not the intended target - whether it is a memory location that is not written by a firmware flash and so might contain "old code" or just the wrong location in successfully flashed memory - is by definition bad memory, and no amount of wishful thinking, voodoo, or power cycling is going to make it good memory.
Code can get corrupt in memory flashing out the the old code thus results in a clear area for the firmware to run. You can believe it or not, but routers manufacturers are adapting is process now, DLINK and etc. ]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22991010 Tue, 08 Sep 2009 14:55:58 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22982639
Memory of any sort that will not accept a write, or memory of any sort that corrupts a write or a read sufficiently to cause a jump to a memory location that is not the intended target - whether it is a memory location that is not written by a firmware flash and so might contain "old code" or just the wrong location in successfully flashed memory - is by definition bad memory, and no amount of wishful thinking, voodoo, or power cycling is going to make it good memory. ]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22982639 Sun, 06 Sep 2009 16:15:05 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22947502 said by MLGTWISTED:

I'm joining this really late, but what exactly does flushing out the NVRAM do and what is NVRAM? Im assuming it to be similar to cache-ing or cached information stored on the router, and it to just cleares it right?
Flushing out old code that tend to stick around after so many firmware updates and downgrades. Not going to hurt the router. I've tested it on every brand so far and no issues. Just take your time doing it.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22947502 Sun, 30 Aug 2009 14:45:35 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22885390 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22885390 Tue, 18 Aug 2009 11:02:04 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22702083 said by Vihsadas:

This procedure doesn't make any technical sense to me. When the router's caps have been discharged after being unplugged for a while, it doesn't matter what you do with the reset button. What's with all of this reset button voodoo?

The emergency recovery page is a real thing, as I've seen that page, but other than that, just flash as D-link recommends...
Don't know why you think it doesn't make much sense. Known fact to clear/flush out the NVRAM after so many firmware updates and downgrades. If you just got A4 and don't have A1, A2, A3 then it might not make sense to you. ]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22702083 Mon, 13 Jul 2009 18:46:48 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22697628
The emergency recovery page is a real thing, as I've seen that page, but other than that, just flash as D-link recommends...]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22697628 Mon, 13 Jul 2009 03:35:23 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22420677
D-Link cautions to upgrade firmware with a wired connection, and advises that firmware upgrades can reset router configuration to default. You did not discover this.

No reason to make this a sticky. Your procedures are ill-informed.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22420677 Thu, 21 May 2009 01:05:14 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22420460 said by aaronwt:

said by tipstir:

Actually you should all put the wireless router, cable modem, switches, wireless access points, print servers on timers to shutdown at night where your sleeping. This way it can cool off thus save energy too. My cable modem works very hard I also reset that one flush out the NVRAM once every 6 months. After that it performs faster.

I control everything with one power surge strip, I should put everything on a timer. Flush out all the switches too. Say like 4am to 9am (5 hrs) shutdown..........

I have ten DLINk Gigabit switches, a Dlink access point, a couple of Dlink Bridges, a DGL4500, and the Actiontec router. they are never turned off. All my electronics are on a UPS. All of the network equipment is covered for 15 to 20 hours during a power outage. I never turn them off and never reboot unless necessary like during a firmware upgrade or to get a new IP address. Otherwise I have no other reason to reboot.
I would never turn that equipment off, since I have around 50 devices on my network and there is always a device that needs internet access at any given moment, especially my alarm system.
Well everyone going to have different setup. You're running SBS right or small domain, average home using not going to be running such a complex system. I mean I come close to you in switches. I really don't need more than 20+ nodes. on Enterprise Server. Don't have to turn off everything that's optional to save energy. I have wireless set to shut down after 3am to 7am no need to have that running where not one is up using it. ]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22420460 Wed, 20 May 2009 23:54:11 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22417142 said by tipstir:

Actually you should all put the wireless router, cable modem, switches, wireless access points, print servers on timers to shutdown at night where your sleeping. This way it can cool off thus save energy too. My cable modem works very hard I also reset that one flush out the NVRAM once every 6 months. After that it performs faster.

I control everything with one power surge strip, I should put everything on a timer. Flush out all the switches too. Say like 4am to 9am (5 hrs) shutdown..........

I have ten DLINk Gigabit switches, a Dlink access point, a couple of Dlink Bridges, a DGL4500, and the Actiontec router. they are never turned off. All my electronics are on a UPS. All of the network equipment is covered for 15 to 20 hours during a power outage. I never turn them off and never reboot unless necessary like during a firmware upgrade or to get a new IP address. Otherwise I have no other reason to reboot.
I would never turn that equipment off, since I have around 50 devices on my network and there is always a device that needs internet access at any given moment, especially my alarm system.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22417142 Wed, 20 May 2009 13:01:49 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22417119
said by tipstir:

WARNING*** DO NOT FLASH OVER WIRELESS OR IN A LIGHTING STORM
YOU DO NOT WANT TO LOOSE POWER DURING THE NEXT STEPS
PLEASE TAKE YOUR TIME DOING THE BELOW STEPS
NO RUSH OKAY!
GOOD LUCK!

Step A_
First backup your config file
Take the router off your network
Just keep the power plug in it..
Now you'll need pin or paper clip for the reset button
This reset button need to be press in for 90 secs
During each 30 secs you'll be doing:

Step B_
press reset for 30 sec on the first try
press reset for 30 sec and unplug the power cord at the same time
press reset for 30 sec and plug-in the power cord at the same time
now unplug the unit wait 30 seconds
now plug in the power

Step C_
connect 1 LAN port cable back to the router
login as the admin
now re-flash
wait until the screen is completed
now unplug the unit wait 30 seconds

Step D_
Now repeat these steps..
press reset for 30 sec on the final try
reset 30 and unplug the power cord at the same time
press reset for 30 sec and plug-in the power cord at the same time
now unplug the unit wait 30 seconds
now plug in the power

Step E_
connect all LAN/WAN cables back to the router
login as the admin
either you recover from a backup or just start fresh.
]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22417119 Wed, 20 May 2009 12:57:36 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22401430 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22401430 Sun, 17 May 2009 09:42:14 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22398902 said by taytong888:

Hello tipstir,

Does this Recovery Mode procedure work for reviving a bricked Asus WL-520GU router that previously was flashed with DD-WRT firmware? Or do I need to follow specific instructions in the DD-WRT web page?
Browser set to the default IP use when you first got the router. Reset the router press in the pin in the rear for 40 seconds then release and keep on access the default IP through the browser. Has to be timed just right. Once you get in flash the router back with the orginal one. I did on the trendnet it worked.

How did you brick your Asus?]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22398902 Sat, 16 May 2009 15:46:10 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22398673
Does this Recovery Mode procedure work for reviving a bricked Asus WL-520GU router that previously was flashed with DD-WRT firmware? Or do I need to follow specific instructions in the DD-WRT web page?]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22398673 Sat, 16 May 2009 14:46:26 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22386466 said by Internet Expert :

THis is basically the worst thing Ive ever heard of doing. It is all redundant, makes no technical sense, and there are no good reasons for doing this. I think its a really bad idea for anyone to listen to this guy...
It's not the worst thing.. I've you tired it? Others have. ]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22386466 Thu, 14 May 2009 00:12:42 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22386133 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22386133 Wed, 13 May 2009 22:38:23 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22352033 said by No_Strings:

That, I'll buy. The rest is excessive.
Well the Recovery one I wouldn't use that unless it was the last resort or you had issues flashing the firmware (Example (router rebooting on it's own, stuff like that). The first post comes in handy for all of those here with A1, A2, A3 hardware who's be flashing back and forth with no many new flash releases. Some firmware sticks around and doesn't clear it self. I see DLINK is recommending resting the router after the you flash. I do it before and after.]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22352033 Thu, 07 May 2009 01:16:22 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22351962 http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22351962 Thu, 07 May 2009 00:37:54 EDT Re: [Info] Flush out the NVRAM Before you Re-Flash Your Router U http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22351949 said by No_Strings:

Flash with new firmware.
Hold reset button for 10 seconds.
Done.
The way I did was in the first post.. I didn't have any issues. Actually all my routers I do the same method.

There is a Recovery WebSite Flash Mode (Recovery Boot) or Recovery Emergency! Note You'll need to set your computer to the same subnet mask. Now you'll be given a page that will only allow you to upload the firmware. Upload your bin file and let the router do it's thing and you're set!

This is different way:

1. so the browser needs to be up and running.
2. Set browser to 192.168.0.1 (hard coded ip recovery)
3. LAN port 1 to PC LAN card connected
4. disconnect power
5. hold reset
6. connect power
7. hold reset for at least 30-40 seconds
8. connect to web browser 192.168.0.1]]> http://www.dslreports.com/forum/Re-Info-Flush-out-the-NVRAM-Before-you-ReFlash-Your-Router-U-22351949 Thu, 07 May 2009 00:32:44 EDT