how-to block ads
Efficient has discontinued the old 5660 and replaced it with the 5663, and then with the 5667. The 5262 is now the de-facto 5260 as well. There is also an "Extended Reach" 5262. Now there is also a 5263.
The hacks will NOT work on 5262, normal nor extended reach, nor will they work on a 5263. Note that you cannot buy a 5660 anymore at any place besides Ebay, nor can you buy a 5260, as both models ceased production some time ago.
Only certain part numbers have Telnet available. See the chart below for details on a few popular numbers.