I've upgraded the firmware many times on my linksys (older model). I'm not sure about any type of speed increase, but I did have connection issues earlier on which it might of fixed.
From the Firmware release notes it looks like they fixed a ping issue, which might help you out.
From the Firmware release notes it looks like they fixed a ping issue, which might help you out.
http://www.linksysbycisco.com/EU/en/...T54G2/download