The HTC Thunderbolt MR2 release, rumored for a rollout around or after June 15, has been leaked and is now available for download in both an unaltered version as well as a few custom ROMs. We figured when the MR2 radio leaked out a while back that we would soon be seeing this one. Some of the highlights include better signal strength, a 3G/4G toggle setting, and help with those random reboots many users have been seeing.
We can't be 100 percent positive this is the final MR2 release (and we've seen a previous leak bork things up a bit), but it's signed with release keys and certainly looks official. If you feel the urge (and we don't blame ya!), hit the source link, heed the warnings, and give it a try.