I upgraded my iphone 1.1.1(bought on ebay and unlocked by the old owner with ipsf) to the last firmware version 1.1.4. I've jailbreaked, and activated the iPhone, but no signal... How can I solve this issue?
P.S. I decided to downgrade the last firmware to the 1.0.2 firmware version with the same 1.1.4 baseband 04_04_05_G and all works like a charm. Then when I upgrade it to the last firmware....no signal.