Originally Posted by pugdogcrazy
I have the at&t sgh-i777. do you have a link to the GB uvlde for that? would that fix the problem?
That is the problem exactly you attempted to install software on your phone that contains the wrong drivers. I hope you were rooted before you did the install. If you were check out what recovery you have if you still cwm recovery restore from your backup to fix your phone. If you have stock recovery connect the phone in download mode to the computer and install cwm recovery.
Here is your site that takes you step by step of how to fix your phone - including all files that you need for the AT&T version of the Samsung Galaxy S2 code name (Skyrocket).
In the future please read what you are flashing because there can be extensive damage to your phone from the incorrect software being placed. I hope that you can fix it and get it back to gingerbread once you get through these steps.
Hope to have helped a little