In regards RF-uploading, over the past year and a half, I've tried ... getting people around here who are knowledgeable with avrdude and the bootloaders interested, but also with no success either.
Sorry. I keep meaning to do more with wireless and networking, but it seems to keep getting put off...
The transfers are really pretty straightforward, and how they get hosed by the XBee radio transmissions is fairly evident
Well? Don't keep us in suspense! Publish your suspicions!