My niece tried to root my tab (SM-T337A). It not says system software not Authorized my att. I've tried t download the firmware through odin it didn't work. what else can i do. I'm 4 hours from the nearest att or best buy so if anyone can give me a solution to fix it from home i would appreciate it.
The best way is to download your original STOCK rom and flash it through odin.
I need more info about your question. When you rooted it, did it sucessfully root? Do you know if the bootloader is unlocked?
Also, what kind of recovery are you using?
Step 1: Download correct (Stock) rom off the internet. Make sure it is the STOCK rom, and that is matches your model number.
Step 2: Make sure you have obtained the correct PIT file for your galaxy tab 4.
Step 3: Once you have the files, don't plug your tab into the computer just yet.
Step 4: Before you plug your galaxy tab into the computer, make sure you have the samsung drivers installed on the computer. The drivers is essential for successful flashing!
Step 6: Place the PIT file you downloaded in the pit section (Click PIT and then choose your PIT file).
Step 7: Now it's time to install your rom! Click on the option: "PDA", and pick the rom (It should be in a zip), that you downloaded. ALSO, do NOT check re-partion!!!!!!! You can choose auto-reboot option if you would like.
Step 8: Now click start, and the installation should take about 3-5 minutes depending on the size of the rom you downloaded.
Step 9: If it was successful, you SHOULD see a bold green box that say's PASS!
If NOT successful, Let me know!