sollution.... reflash the firmware
problem: all step by step in one document i could find online assume either windows OR Mac... i wanted to use my desktop (a debian machine) so i wrote it up.
1. get the original firmware from linksys, or an alternative firmware from where-ever. (with "might be broken" hardware i always prefer to first flash the original firmware, just to check)
2. install upslug2
apt-get install upslug23. set your fixed ip to something in the 192.168.0.0/24 range, but NOT 192.168.0.1 (make sure that that's free)
redboot the machine
when the nslu2 boots, for a few seconds you can telnet into it on port 9000
so boot the nslu2, and start executing the following command on your pc
telnet 192.168.0.1 9000
once you'r in you have maybe 2 seconds to press ctrl-c and interrupt the normal boot .. so be prepared
once in redboot, erase the existing bootloader ...
redboot> fis erase -f 0x50040000 -l 0x20000and put the nslu2 in upgrade mode
redboot> upgradeyou'll see the satus led start flashing orange-green-orange-green
run upslug2 without any switch to find your nslu2 you'll get back some info one of witch is the mac-adress (note: upslug has to be rone as root)
next use upslug2 to flash the firmware
upslug2 --target="00:00:00:00" --image="someimage.bin"
go have a coffee or thee or chocolate milk, or whatever .. it'll take 5-10 min