HTC Desire

clipped from androidforums.com 1. Using the *#*# 4636 #*#* to set GSM auto (PRL) 2. Toggling airplane mode 3. Rebooting 4. Hard reset. 5. Updating the baseband to 1.19.161.5 (but this may only be a Vodafone update) or th 1.21.405.2 HTC Update as this contains a new radio.