I just wanted to report that I just got my HTC 6800 over the last week. After seeing this posting, adding GPS was something that I definitely wanted to do to my phone.
After some checking, I found out that my phone already had the ROM version and radio version installed in the first part of this message. Eagerly, I tried just installing Google maps, but GPS didn't work. Then I installed the patches, soft reset my phone, and all is good!!!
If you have a fairly recent phone, it appears that you might have the latest ROM and radio version. If that's the case, then you don't need to go thru the step of flashing the ROM, or at least I didn't.
Immediately after the patch installs, it took my phone about 5 minutes to find 5 satellites. Since then, it doesn't have any problem finding satellites very quickly. 5 is the most that I've seen so far, so I think that I'll put my phone in the window and see if I can lock onto more, even though it works great at the moment.
CADman_ks
PS: let me say two things:
1) I'm totally new to the whole internet/gps/windows mobile/ phone thing. Yeah, I have had cell phones, but this is something totally different.
2) This site is TOTALLY AWESOME! This is my first post, and I hope to find out a TON of information here. The information in this one post has been almost invaluable!!! Now I can sell my hand held GPS.