Is my WRT54G v2.0 a 32MB version? pics of mainboard inside

Discussion in 'Cisco/Linksys Wireless Routers' started by Didzi, Jun 5, 2007.

  1. Didzi

    Didzi Network Guru Member

    Hi Guys

    I have taken some pics of the WRT54G v2.0 (uk) and I would like to know if the version is 32MB

    there is 2 memory modules onboard that say "ISSI IS42S16800A - 7T"

    see pics

    If it is 32MB does anyone have a guide of how to enable the extra 16MB ?

    Also I have been told if I reset the router by switching it off after the upgrade the extra 16MB vanishes again? is this true?

    Many Thanks
  2. silentaccord

    silentaccord Network Guru Member

    You appear to have two 16MB modules for a total of 32MB but I don't see anything identifying your board as a WRT54GS revision XB or XH like this one:
    I've read in some places that the extra 16MB can only be enabled with a WRT54GS revision XB or XH board. Other places make no mention of the board revision and simply say it will work as long as the RAM chips are ISSI IS42S16800A-7T.

    My WRT54G v2 looks like yours. I peeled off the white sticker looking for the revision information but there was nothing. Since I have yet to find a compelling reason for increasing the RAM to 32MB and because a JTAG cable is required to de-brick the router if the upgrade fails, I have been reluctant to try it.

    Instructions for enabling all 32MB can be found here:
    Since it's stored in NVRAM, it will survive a reboot or power loss but not a reset (using the reset button) or restoring factory defaults/clearing NVRAM. If you decide to try it, please post your results.
  3. Didzi

    Didzi Network Guru Member

    Thanks for the reply, silentaccord

    Like you mentioned, I also dont have a JTAG cable, so I dont want to brick the router.

    I have installed the latest tomato firmware, so I will see if there is an improvement from the router.

    Many Thanks
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