The reports are correct! I flashed mine with the 'unofficial' new version CC20 ROM from Samsung, and the GPS now works! You also get a few other new features as a bonus. If you follow the directions to the letter, the flash will likely go perfectly. Took me about 10 minutes, and had no problems at all. Some of the failed upgrades reported were from not following the directions; the other common failure factor seems to be trying to a USB 1.0 or 1.1 connection to the phone.I have seen a lot of reports of success in unlocking gps.
@rockymtnhigh: There is also now a version of the original ROM floating around - so if you do get into trouble for some reason, you can always reflash back to that one.