Cziriblog

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Thanks to Semaphore (creator of tiny umbrella) for this information:

It was possible to update from 4.0/4.0.1 to 4.1 while using TinyUmbrella to restore your iPhone 4 to the latest iOS without upgrading your baseband – therefore you could still use ultrasn0w to unlock. But that fun-ride is over… at least for now.

It seems that Apple has decided to put a baseband requirement on iOS. So at this point, if you are using Saurik’s server or tiny umbrella and trying to restore 4.2.1 on an iPhone 4, you will end up in recovery mode and tiny umbrella will not be able to pull you out of recovery.

In this case, you will have to restore 4.1 again or you will have to restore 4.2.1 stock and be tether jailbroken. (Of course, I recommend 4.1 and not bothering with 4.2.1 at all). If you are an unlocker, this is a no brainer. Do not update to 4.2.1 even to test it at this point.

  DONT READ ON YOUR HEAD BE IT JUST DONT MOAN LATER U DID WE WARNED !!!!!
Guys do yourself a favour and keep the hell away especially if u r 3gs no way back no way to update 4.3 if true weeks/days away do a search look at the probs 4.2.1 is a buggy piece of crap!!!!!!!!!!!!!!!!!!!!!

updating to BB 6X is just stupid!!!! its ipad!!!!!!

Do yourself a favour look at the warning !!!!!!!!!!!!!!!!!!!!!!!!

WARNING:

YOU DO THIS AT YOUR OWN RISK! PLEASE UNDERSTAND THE CONSEQUENCES OF UPDATING TO 06.15.
There is no way to come back down from 06.15, and there’s no hiding the baseband version from Apple. You’ll be voiding your warranty in a very obvious way.
If some future baseband comes out with a critical fix, you won’t be able to update to it if it remains down in the 05.xx sequence (then again, you wouldn’t update to it if you wanted to keep your unlock anyway).
Starting with FW 4.2.1 if you have 06.15 on your iPhone you won’t ever be able to restore to stock firmware (it will fail). You’ll need to only restore to custom IPSWs (then again, if you’re unlocker you should already be doing that).



is everyone blind

Look what firmware the boss (Sinfuls) on!!! Ask him if u think I talk shit he goona update for what????????????


I say every-time act in haste repent at leisure and this time even Dev Team warn u but no one READS

AGAIN UNLESS U HAVE NO OTHER CHOICE STAY THE F#5K AWAY FROM IT

And if u dont listen dont PM me!!!! I aint no magician!!!!!