Originally Posted by ruggrock
So, I tried getting some information from Tmo via their online chat service twice. I ended up with nothing. As of this afternoon, they say this is a 'known' issue with no solution.
One agent offered to line me up with a replacement device that may or may not have the update on it. Wow, helpful. My phone is still ridiculously slow and doesn't work on many levels. They said there is currently no way to go back to 1.6. (Why don't I just root it?) *chicken*
If you did a reset on this phone and left your SD card in, all you managed to do was reintroduce the original issues back onto the phone. It automatically backs up forked up data and then restores it.
Try resetting again, but remove the SD card before you do.
Expecting your phone to be blazing fast after this update is unrealistic. This is older hardware and this is a major update. Is adds weight to the OS. It IS going to be slower.