problem with iphone 3G and baseband 06.15.00 [closed]

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I have an iphone3G. I did the mistake to connect it to itunes and update to latest software 4.2.1 so it locked and i开发者_C百科t does not accept my SIM card. So I upgraded baseband to ipads 06.15.00 with redsnow and activated, jailbraked it and unlock it with ultrasnow. Everything was perfect [SIZE="4"]BUT then i did the most stupid thing.[/SIZE] I connected it again to itunes hoping to load my photos from a backup. But things didnt work in a good way. It locked again. I dont know the current firmware that it has. Now i cant jailbreak it with redsnow and itunes wont restore to any IPSW because itunes cant downgrade the baseband. The phone is not even activated right now and i cant run cydia to unlock it. PLEASE HELP!

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As a last resort, try reseting the iPhone. It should say how to do this in the instructions. Contacting Apple might have been a better idea than jailbreaking.