Hi I am still quite new to all this, I just downloaded the firmware from some site rather than upgrading in iTunes because it was a smaller file. If you download the firmware from another site does that make it a custom Ipsw? I'm not sure what you mean by why didn't you restore from iTunes because there what not be ios 5 to restore to. Anyway, to answer your second question, i restored from backup because I thought if you set it up as new you wouldn't be able to use your iTunes account to register it because it thinks its on another one. Please tell me what to do!!! Much help appreciated!!
**UPDate**
I'm not sure if it wa a custom Ipsw I'm not sure how to tell I think that part of the post was incorrect