T-Mobile A-GPS Patch
(Depreciated version as of v1.3. v1.2 was last release. See page on A-GPS Worldwide Patch.)
This is identical to the North America GPS addition on another page. However, there is one slight modification. I added the extra T-Mobile HOST to the gps.conf.
You can download the patch at XDA on the following thread: Inspire 4G. It's on the second post.
DISCLAIMER: I am not responsible for any problems you cause your device by making changes. Be careful when "hacking" or "rooting" your phone as this does void your warranty.