Hello guys, Quick story: My father lost his 3G, then bought a 3GS at ATT without knowing it cannot be unlocked for use in HK, so now he is using his old 2G(from ATT I believe) jailbroken and unlocked. However, the phone is suffering from dropped calls, so I am thinking of updating his firmware. If I update to 3.1.3, will it update its baseband as well and lock the phone again for whatever reason? I am just afraid that updating the 2G will cause the phone to be locked forever, and cannot be used with his Hong Kong carrier. Verson: 2.1 (5F136) Model: MA712LL Firmware: 04.05.04_G I appreciate any help! I've searched, but I didn't get a clear answer. Thanks!