I recently found this post on how to install Twonky on wl500w using factory FW:
Ok As I have found a solution. I will post here for other.
In fact it was quite easy. WL-ASUS 500W needs a different build. You should take MIPS little endian glibc 2.2.3. Extract it to you your attached drive. Correct all paths in the ini files. Then make a startup script, for example init.sh, which contains
route add -net 184.108.40.206 netmask 240.0.0.0 dev br0
This part I can't figure out
and then put this init.sh in the USB Section /Initial script. Reboot and that should work fine.
Disable the built-in Media server before. tested with firmware 220.127.116.11 and twonky 4.4.2.
Unfortunatelly I'm having hard time to do so since I'm not Linux GURU like most of you here. Can you guys give me some advice ?
I tried to contact the original poster but I doubt that I'll get any response