[chirp_users] MTC uv-5r-3 Self-inflicted problem

I just got a Baofeng UV5R-3 from MTCRadio. I didn't realize that the radio could be found under MTC for the brand, but in the meantime I found that I could upload from it in regular UV5R mode. I ended up downloading an image to it from a regular UV5R. Then I discovered that Chirp had it covered already under MTC. I have tried resetting it and uploading from it, but i can't get it to work. Does anyone have a known-good image that I could attempt to load onto the phone and make it happy again? Or any other advice? My son also bought one and hasn't tried programming his yet. I have warned him of my folly and asked him to save me a blank image file from his when he gets around to it.

Thanks,

Bruce W8BPM