My GPS chip died in my 2nd Touch Pro 2. Losing that feature alone near about killed me because I use it almost everyday with Tom Tom.
What I ended up doing is installing the stock rom and relocking. Went into Verizon and they deemed the GPS broken
I ESN switched that phone back onto my business Verizon account and they sent me out a refurb. Received the phone and put it back on Page Plus.
I think the cause of the death of the phone most likely was overheating. I really believe I demand too much out of the phone by running all the radios at once with it plugged in. Hopefully the build quality improves on the next HTC iteration of this model!