i have a 6220 which is showing contact service. i have flashed it with different version and all went down correctly. however i still get conatc service. i load the correct pm, but no luck, however there is 1 technique i have use to put the mobile in good state only in a temporary basis. i put it through the bb test, there i switch on all pixel and hurray the mobile is on again. i insert a sim card while connected to bb eset and the phone is fine and make calls. however as soon as i take it out of the bbtest (all pixel on) & i put a bateery, the conatc service is back again. pls help

try unlocking it...or check putting another pm file..that pm might be corrupted..or even try formatting user area and making factory settings..

try to reflow or change a new UEM.