
So, although I didn’t use or want the DD-WRT firmware on my routers, it did make it possible for me to get the routers back to the Linksys firmware that I wanted.

Still with nothing to lose, I thought I would try to flash the Linksys firmware again. At this point I had nothing to lose so I tried flashing them with the most basic DD-WRT firmware that was compatible with them., To my amazement, they both accepted the firmware rather quickly and easily. I tried for days, using TFTP, and a whole bunch of other firmware flashing utilities. For what ever reason, they would not accept a flash back to the original Linksys firmware.

The seller didn’t inform me that he had flashed them with a 3rd party firmware, namely, Broadband Hamnet. I bought two Linksys WRT54G routers, used on eBay, for access points around the house. I know this is an old thread but I felt my story might help someone else if they found themselves in a similar situation. In case of a Linksys router, you should see the Linksys firmware page, and your user name and password will have changed to: username = blank, password = admin or username=root, password=admin.

If you have DD-WRT on your router you have to do the following: If you are using HotspotWRT or CoovaAP, first you need to upgrade to OpenWRT, then DD-WRT to be able to revert it to original firmware. If you have DD-WRT you can directly revert back to your manufacturer’s firmware using DD-WRT’s web interface.
