I got this iPhone 3GS (built week 41 2009) that was supposed to be "unlocked". It came with iOS 4.1 and as soon as it got upgraded by iTunes to 6.0.1/BB 6.15 it went into that "No Service", "Searching" thing. Now all SimCards are invisible to it!
I tried downgrading the BB but I get the ERRNO=7 during the DFU boot. I tried downgrading iOS to 5x but I get the same ERRNO=7 in DFU Mode (then it freezes up). All with Redsn0w 15b2 and 15b3.
I went for the tethered jailbreak solution for 6.0.1 and managed to install Cydia, Ultrasn0w and even that Ultrasn0w fixer, but all to no avail....still "No Service".
I spent so many hours trying to fix this that I think at some moment I might have said to Redsn0w that my bootroom was the new one, but it seems it was the old one (according to Redsn0w)....don't know if that screwed anything.
Now the situation is this: - 3GS is stuck in 6.0.1/BB 6.15.00 and works fine except for the SimCard that is never recognized; - I can't restore the phone 'cos iTunes gives me the "unknown error 21"; - Cydia says there are no "blobs" for me (I'm too late or something) and all I got with TinyUmbrella were 2 SHSH (4.1 and 6.0.1) that I saved on my HD.
Can I go back to 4.1 ? What to do??
Please help!
I tried downgrading the BB but I get the ERRNO=7 during the DFU boot. I tried downgrading iOS to 5x but I get the same ERRNO=7 in DFU Mode (then it freezes up). All with Redsn0w 15b2 and 15b3.
I went for the tethered jailbreak solution for 6.0.1 and managed to install Cydia, Ultrasn0w and even that Ultrasn0w fixer, but all to no avail....still "No Service".
I spent so many hours trying to fix this that I think at some moment I might have said to Redsn0w that my bootroom was the new one, but it seems it was the old one (according to Redsn0w)....don't know if that screwed anything.
Now the situation is this: - 3GS is stuck in 6.0.1/BB 6.15.00 and works fine except for the SimCard that is never recognized; - I can't restore the phone 'cos iTunes gives me the "unknown error 21"; - Cydia says there are no "blobs" for me (I'm too late or something) and all I got with TinyUmbrella were 2 SHSH (4.1 and 6.0.1) that I saved on my HD.
Can I go back to 4.1 ? What to do??
Please help!