I need to flash back to stock rom and do a factory reset on my AT&T SGIII - this I know how to do . However, what I don't know is if the links I've found for tar files for a stock restore (like the one posted here)are for the ice cream sandwich version that launched with the phone, or the newer jelly bean version.
If it is the older version, once I'm done restoring it back to stock and factory settings, will I get an option to update to jelly bean thru AT&T?
Or do I need to find a stock AT&T jelly bean file to flash? If so, where do I find that?
any help would be appreciated. Thanks