Hi !

I just had the same problem a few days ago when I was trying to downgrade my FW from 080 to 078 (to see if I would get better WiFi connection). Although it seems like the 078 FW version wasn't compatible (wrong "region" I think, since my RC9800i is a US version, and the FW was for Europe).
Anyway, I also got stuck on the Philips logo all the time.
Philips told me (via the Streamium Café forum) to do the following :
1: Power off the RC9800i
2: Press and hold the Page and Home buttons simultaneously and power on the RC9800i (while still pressing the buttons).
3: Wait until the FW upgrade page shows.
4: Continue as normal for upgrading the FW.

Worked perfectly for my (i.e. I'm now back on FW 080 at least...)

HTH,
/Mathias