aniso
join:2007-08-13
Kingston, ON | reply to voiplover
Re: WRTP54G-ER JTAG Unlock using windows hi all,
sorry for a noob question. I have followed this thread (and others) quite closely. I have recently bought a WRTP54G-er for US$30 and I would like to unlock it. It came with firmware 3.14 so I assume the software-only method will not work.
I'm new to hardware/soldering but I'm quite fluent in software/linux. I would like to build my own JTAG cable. However, after reading all the posts in this thread it seems to me that soldering TO THE ROUTER is necessary.
Will a JTAG cable with 14-pin header not be sufficient for erasing the eeprom? Why do most people in this forum choose to solder to the router directly? This is rather counter-intuitive to me as personally I won't like to solder to the board directly.
or is soldering to the board necessary in order to connect pin-1 to pin-14 with a 100ohm resister?
any clarification is very much appreciated, |
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 voiploverPremium
join:2004-05-28
Portsmouth, NH | 1st all the resistors should be connected through the JTag cable.
Next, if your router came with header pins for a Jtag cable the you don't need to install them. Otherwise you will need to do some soldering.
Always solider from the bottom side through to the top side of the PCB board. |
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aniso
join:2007-08-13
Kingston, ON | Thank you for the clarification. It turns out that my wrtp54g does not come with header-pins, so me and my shaking hand will have a lot of fun soldering. Will report back once it is done.
thx, |
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3 edits | When you solder the header pins, the holes that connect to ground and V+ planes are very difficult to solder. Fortunately, you can use the nearby header pins for ground and V+:
1) Don't solder anything to hole 2,4,6,8 and 10; instead, use pin 5 at the left. Hole 12 is easy to solder with.
2) Don't solder the 100 ohm to hole 14; instead, use pin 1 at the left.
3) I don't solder the grounding wire to the case metal.
Without having to solder 2,4,6,8,10 and 14, it is then a very easy soldering job. Works great for me. |
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whyfi1Premium
join:2007-08-12
Vancouver, BC | reply to voiplover
Earlier in this thread, someone mentioned that putting 1/4 watt or 1/2 watt wouldn't matter. I can't find any half watt in our local electronics store. Can I use 1 watt?
Pardon me for the question. I'm just getting my feet wet and electronically challenged.
Thanks. |
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voiploverPremium
join:2004-05-28
Portsmouth, NH | The wattage doesn't matter. |
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aniso
join:2007-08-13
Kingston, ON | reply to fixup
said by fixup:When you solder the header pins, the holes that connect to ground and V planes are very difficult to solder. Fortunately, you can use the nearby header pins for ground and V : 1) Don't solder anything to hole 2,4,6,8 and 10; instead, use pin 5 at the left. Hole 12 is easy to solder with. 2) Don't solder the 100 ohm to hole 14; instead, use pin 1 at the left. 3) I don't solder the grounding wire to the case metal. Without having to solder 2,4,6,8,10 and 14, it is then a very easy soldering job. Works great for me. Thanks so much for your reply. I only wish that I have checked this forum again before I attempted to solder it. With a help of a friend we managed to JTAG the router, but you were right: soldering the ground-pin took a long time with the low-wattage soldering gun.
I then proceeded to upgrade the firmware to 3.1.24. Did anyone noticed that, under the "voice" tab, it says the the firmware is *3.1.22* on the top-right corner of the web-server?
Also, I could not find any QOS setting for the voip (where in my old wrtp54gp2 there is a QOS setting deciated to voip). Is it just not needed with wrtp54g?
I do experience some disconnection with wrtp54g during a heavy download. Hence my question.
any help is very much appreciated, |
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