I am trying to go to Froyo. So far I have tried two windows machines and two macs with mini kies. The result is the same, the MTP screen comes up on my phone then flashes back to the homescreen then back to MTP. Mac says usb connection is 'unstable'. Windows says 'connecting the device'. I have removed my external sd card (ss suggested elsewhere and have wifi, BT disabled. I have even done a factory reset to remove all user data. No luck Is there anything else I can do on my phone?