Also, it's a rough draft, let me know if things need to be changed or clarified, though I'm not intending to keep this updated in the future.
1. Booted up, checked for firmware updates, got none, stuck on Jun security patch with firmware version T830XXU1ARGH/T830OXM1ARGH/
2. Settings>about tablet>tap on build number to get into developer settings.
3. Check OEM unlock, tablet resets and erases everything
4. Installed Samsung Windows USB Drivers from here: https://www.samsung.com/us/support/downloads/ on Windows 10 pc
5. Booted up, installed Magisk Manager v 5.9.1 from here: https://forum.xda-developers.com/app...mless-t3473445
6. Downloaded boot image modified with Magisk 16.7 from here: https://forum.xda-developers.com/sho...0&postcount=35
7. Installed Odin 3 from here: https://forum.xda-developers.com/gal...1arh1-t3831918
8. Started Odin, checked AP and selected location of the BootImage from above as location of AP
9. Connected tab to PC, opened command prompt, adb reboot bootloader
10. Loading screen comes up on TAB, Odin says “Added!” to mean it recognizes the Tab
11. Hit “start” in Odin
12. After it’s done, Tab says something about a problem booting, Click “reset” on, tablet gets erased again
13. Booted up finally, on boot it says something about warranty and kernel and a bit being triggered
14. Connect tab to PC, command prompt, adb shell, “pm uninstall -k --user 0 com.samsung.android.securitylogagent”
15. Open Magisk Manager, it says tablet isn’t rooted.
16. ADB reboot bootloader, Repeat the flashing in Odin. Just don’t close Odin so it’s all ready to go, hit start
17. Tab rebooted fine
18. Open Magisk, Magisk says it’s rooted but want’s to install 17.1 which is the current stable version of Magisk.
19. Agree to install the Stable Magisk (17.1), choose direct install as it is “recommended”.