[bedoig]

I can't give you all the details, but from what I understand it is not recommended to revert to a non-GPS ROM/radio from one that is GPS enabled. It's my understanding that certain areas of memory may not be written over when you flash back, thus causing the potential for issues. I have heard of people doing it successfully, but I've never tried myself. Cokeman can probably give you all the details. Also maybe try the chat.