My WRT54G was flashed with 2.0b4 and I was very happy with it. No more occassional hang even after a long use of p2p software. However, I "upgraded" to the final firmware and found that the problems appear again. I tried to "downgrade" to 2.0b4 again but found I didn't keep a copy. Would anyone please show me how I can get it again? Million thx.