I thought I'd add to this thread instead of starting a new one.
I installed 3.0 on my F900 as per the instructions provided in the first post, but now my unit doesn't boot up properly. It boots fine up to the menu screen, but "System is starting up please wait" won't go away.
I've done some searching and tried deleting the gpsparaxx.bin files and clearing the user\userdata\ contents with still no luck.
I have performed the steps provided for the 3.0 upgrade carefully 3 times now, and I always get the same result. Is there something I'm missing?