Samsung Tab A (SM-T515) U8 U9 U10 UB IMEI Repair & Patch Certification & Root Android 11/12

/*** BEGIN DISCLAIMER ***/ If you follow this procedure and lose every bit of content on your device / end up with a fancy paperweight, I, nor anyone involved with the referenced open source or otherwise licensed projects is responsible. It&all on you, and this will void your warranty. Do not proceed if you don&understand something. Chances are you will have a bad time. /*** END DISCLAIMER ***/ Hey everyone - my Samsung Galaxy Tab A 10.1" (2019) - SM-T515 - recently applied a security update without my consent (The Samsung Android 11R September 8th 2021 Security update - side note, make sure that you turn off Samsung&push service 😅), which canned my previous root access. I use server software and internal port forwarding to do... Things on my device, so I needed my root access back. Here&how I retrieved it, and how I put TWRP in place as my recovery partition in the process. The Tools Make sure you have these before you start. Because this is a Samsung device, you&have to do some things under Windows, like using Frija and Odin (unfortunately). 2.) The latest SM-T515 / SM-T510 firmware from Samsung for your device&CSC (if you use the firmware for the wrong CSC code the most common problem that I have seen as a result is typically incorrect partition sizes after flashing, which can be corrected with TWRP). Frija is listed first, because you&use Frija to get this directly from Samsung. 3.) Some kind of generic tool that you&comfortable with for working with archives.