Originally Posted by Tdeljr
Cm 11 isn't the same 4.4 as the official tw 4.4 which is the one with the updated bootloader. So going back to a 4.3 rom is not a problem. Either find and flash the stock rom located in Dev section or you can Odin the stock tar file (which will revert you back completely to stock.
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I'm stuck in a similar spot.
On TMO 4.3 stock/deoxed, I did a nandroid backup with CWM 220.127.116.11, flashed CM11 to play with a for a few days, and after restoring the backup, the phone boots, but after putting in my pin, all i get is black screen and lots of force closes. I tried the Brick_Loop_fixer zip with no luck. I've different combo of wiping cache/davik cache and formatting system BEFORE the restore with no luck. I also tried ODIN back to full stock, flashing the stock/deoxed ROM i was using, then doing the restore, same outcome.
Any help would be great!