Originally Posted by
grunt0300 Hey rong, you're one step ahead of me again. Haha. Let's see if i'm going to do this right. Get the files from xda, and put them on the sd card at the root. Open AutoRec, and go to Recovery Mode. Tap on Install and tap on new rom zip. after installed, reboot and done. How do i put my S2 apps on to the S3, without adding other b.s? What about Gapps? If you've got an easier way, please help me out. Thanks.

I downloaded the rom to my phones download folder, backed up messages and phone log, rebooted into recovery, created a nandroid, factory reset, wiped dalvik and cache, install rom.
No GAPPS required, it's like one of those all in one stock roms the S3 had. Just make sure to select the att variant. I also installed xposed and gravity box