can you install either of those versions? or do they still need to be modded?

Thanks for sharing this information. I have tried the image you mentioned in your last post. This image causes a kernel pacnic since it can not mount the root fs.

Check my post at

http://www.dd-wrt.com/phpBB2/viewtopic.php?p=198462#198462

At least three fixes needed:

A:
Interestingly: If you check the logs you can see
<b>This version does detect the serial flash after flashing it the first time usuing Netgear's Router Upgrqade page
After the first start, it reboots immediately and in this next start it cannot detect the serial flash.</b>
But after that if fails to detect the flash. Possibly we need to improve the detection.

Logs Attached.

B.
The other issues is flash layout - that is causing problem with the European version of the firmware.
The checksums of the images are written at Flash offset 0x0038FFF8 and is checked by the boot loader.

The Flash blocks
1. 0x00380000 to 0x00390000 should be reseverd for aving the checksums that is checked by the boot loader.
2. 0x003e0000 - 0x003f0000 should be reserved for board-data (mac addresses, HW id).
3. 0x003f0000 - 0x00400000 - is the usual nvram.

C.The other modification required are,
the loader should be lzma compressed and should start at address 0x80001400 (and not 0x80001000). A small patch in the head.S solves this prblem of loading in EU version of the router - but since it courrupts the checksum it fails to boot.

Patch Attached.

thanks. Just tried this image but this is causing checksum error at my end.

One thing I would like to mention, to boot the dd-wrt image you will require to set some nvram attributes. Please set boardnum=83258, boardtype=0x48E, boardrev=0x10 from the CFE prompt and save the configuration using 'nvram commit'. Use the 'nvram' command for this purpose. Those firmware might start working.