My dad (an opposer to jailbreaking) is giving me his old 3g (because he got a 4g) and he doesn't mind if I jailbreak/unlock it. I recently read that, if you updated to 3.1.2 (or higher) from Apple (through iTunes) it upgrades your baseband and you have to downgrade it (with something in Cydia such as FuzzyBand Downgrader) before you can unlock it. Is this true? And what are the consequences if I don't?
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