[remy74]

There isn't a GPS radio? I don't know, this is what I read in ImCokeMan's signature on the custom rom sticky thread,

"WARNING: Attempting to downgrade after GPS (3.xx) upgrade can cause (at least as of now) bricking of devices (I have a dead mogul and vogue to prove it!) Also: titan GPS radio on vogue = bad idea"

It doesn't specifically mention the Touch Pro, and I couldn't find anything about it when I searched, but I didn't want to risk bricking my phone, so I thought I'd ask.