Updating iphone 4 baseband tiny umbrella
If you have your SHSH blobs on file, you will always be able to downgrade back to i OS 4.0.2 or an earlier version.If you haven’t saved your SHSH blobs, I suggest you do now.All i Phones have a baseband, and i Phone baseband is essentially the cellular modem firmware that is on your i Phone.
There are a few that can be found on our Downloads Page The latest version of i Tunes(update via Software update, or HERE) Follow These Steps to UPDATE Your firmware from where you are now, to where you want to be. If you see the Apple Logo appear when you release power, repeat the steps until you do not see it.
The important thing to note when you need an unlock for your i Phone, is to NEVER update straight from i Tunes.
Updating this way always updates the baseband as well, which usually results in you not being able to unlock the phone.
It is fairly easy but I suggest you read the tutorial a couple times before, just to make sure you understand every part of it.
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