This sounds like it may be the last GB update, as that would be the first upgrade he would get before ICS... (I know they were pushing OTA, but that update never installed on my phone from the push).
Yes, we need more details, but if you were all stock and a stock update DON'T WORRY, if it's really bad T-mo should take care of it.
NOW, Photos are the most important thing, where were you storing them, by any chance to the external SD? If so pull it out and slap it in a reader.