If your router is stuck in 'tftp only' mode (characterized by a constant TTL=100 ping response) TFTP the original netgear firmware *without* the header file (chk) located http://www.dd-wrt.com/phpBB2/download.php?id=5495 This will place your router back to netgear's stock 126.96.36.199 North America firmware.
According to Eko the nvram of this router has another partition located on it. This partition contains your routers serial number, mac address, and board code. Builds prior to 9856 would overwrite this section of nvram if you enabled JFFS. Builds 9856 and higher include support for turning JFFS on with this model of router
In the event that you erase this part of the nvram, it will require flashing via JTAG.
WNR834Bv2 JTAG Pinout:
J12 Pin 1 connected to JP1 pin 1 via 100 ohm resistor.
J12 Pin 3 --100r--> TDI (Pin 2 of parallel port)
J12 Pin 5 --100r--> to TD0 (Pin 13 of parallel port)
J12 Pin 7 --100r--> to TMS (Pin 4 of parallel port)
J12 Pin 9 --100r--> to TCK (Pin 3 of parallel port)
J12 Pin 10 -------> to GND (Pin 20&25 of parallel port)
Joined: 08 Mar 2008 Posts: 239 Location: Wayne, PA
Posted: Thu Jul 03, 2008 20:55 Post subject:
Open VPN is working as expected.
Prior to the upgrade my unit thought it was on Channel 1. But, alas, it was actually on Channel 11 as reported by VistaStumbler. Changing channels in the interface appeared to work, but the Netgear was always on Channel 11.
Post upgrade the interface is now correctly reporting the channel it is on, and changing channels in the interface is functioning properly.
Read that complete thread for the hairy details on getting this device fully supported, if you are so interested or suffer from insomnia.
Yea, was a fun ride. Eko gave me a custom bin for those that need to rewrite the extra partition that was overwritten by enabling jffs (prior to it being fixed in subsequent builds) I've wiped my mac address from the file and posting it here for others that require it to revive dead routers. Hex locations are 40~45 according to xvi32
Use these parameters to flash:
-flash:custom /window:1fc00000 /start:1ffe0000 /length:10000
Incidentally, if anyone in the states (I am in NY) needs one of these fixed, drop me a line and you can send it to me to be fixed, or I'll help ya assemble what you need to fix it (if the instructions aren't clear enough)
Also, the instructions incorrectly refer to J12 as JP12 ... sorry, it was late for me and I wasn't paying attention. It is in fact J12.
(PS by Eko: MAC must be inserted in custom-nomac.bin file and file must be renamed to custom.bin before jtaging it.)