No, the jailbreak will not be retained. You'll have to run it again.
That is not correct, restoring an itunes backup does not break evasi0n.
A firmware restore does break evasi0n, the two a very different.
So I can restore to a previous backup and my jailbreak will still be on my iPhone? I do have the latest firmware 6.1.2
It's very straightforward for the restoration. Simply follow these procedures:
1. Simply right-click on the device in iTunes and select "Restore from backup ".
2. You can then select the backup copy you want to restore. Once you select the correct backup copy, hit the "Restore" button and iTunes will restore your iPhone.
That's it. In case you face similar situation as my friend, try to recover iPhone data from older backup.
Fill out the password?
Ok, Awesome communication on my part... I did not state that my iPhone is stuck recovery with apple logo....