These firmwares are for the Galaxy Tab A 9.7 Wifi and are mirrored for faster download speeds. This is also an pit file collection incase of any person who has messed up their partitions.
What Do These UnBrick Firmwares Do? Basically, if you ever have an soft-brick or any sort, these firmwares will help get out of that. What makes these different from the rest for say like sammobile or samsung-updates is that these are separated into different tars which the SamFirm Tool provides an option to include binary nature aka PIT and separate tars like Bootloader, AP, CSC and so on. These should help you unbrick your Tab A in most cases and even somewhat worst ones. IF you are in an minor bootloop and just need to get back to stock, use sammobile and download the firmwares from there. Those are the regular ones. You can still use these if your doing the same also but these can help in desperate situations.
How To Use/Flash These Firmwares?! Simply just download the one for your Tab A model and in the zip it contains different tars. Place the tars in the appropriate sections in odin. Example: Put the AP bla bla bla Tar in the AP Tab Of Odin and the BL tar in the BL tab in odin. In most cases for say like you flashed a bad rom or in a bootloop, you will only need to flash the AP and BL Tars Only. Most times you dont need to flash CSC. Flash the CSC Tar if your Tab A is not booting up after flashing BL and AP Tars. Make SURE YOU GIVE IT 30 Minutes after flashing in odin if it doesnt seem to boot.
Firmware Downloads (Fast Servers): SM-T550 Tab A 9.7 Inch Version: T550XXU1AOF5/T550XAR1AOF5/T550XXU1AOF5/T550XXU1AOF5 Region: XAR [USA] Download: https://mega.nz/#!usxzTJTI!r9vhUbTO_...dhqSanCI00sZOU
ODIN DOWNLOAD: Odin 3.09 Download: https://www.dropbox.com/s/028kidvc9q...v3.09.zip?dl=0
FROM xda-developers.com