This is going to restore your tablet back to STOCK 4.2.2. This is the most recent version provided by samsung.
YOUR GOING TO NEED DRIVERS INSTALLED!!
THIS FIRMWARE IS FOR THE P5210 MODEL ONLY! IF YOU HAVE P5200 OR P5220 YOU NEED YOUR OWN FIRMWARE! I will be adding them to my MEGA account soon.
1. Download this file:
(I have hosted it on MY MEGA account so that no one has to go through the crap I did to get the file. The mirror is courtesy of @r_hippy)
2. Download ODIN:
(Also my MEGA, for convenience, if you want to find it somewhere else then fine)
3.DO NOT CHANGE THE .MD5 TO .TAR! Flash in ODIN as a normal .md5 file.
3a. Extract and open ODIN.
b. Extract firmware.zip
c. Put tablet into download mode. [Hold power and vol down until text shows, then press vol up]
d. Place firmware into PDA section, and wait to verify. When finished click START at the bottom.
You have successfully just unbricked and unrooted your tablet. For root again follow this guide:
But use this root.zip
Sent from my GT-P5210 using xda app-developers app