UPDATE 12/3/2017 - New version of TWRP has been released v3.1.0-0. See below:
I have updated versions T710/715/T810/T815 with new builds. TWRP is now v3.1.0-1
System image backup/restore
Factory image flashing.
Supersu root option removed which would cause a bootloop on 5.1.1 and 6.0 devices.
MTP fix - MTP now finally working in recovery.
SEANDROID warning fix
This version also has system image backup and restore included. It is also possible to flash factory firmware images via the Image install button. (see the TWRP changelog above for more info)
I have modified the twrp source code and extended factory image partition flashing to include all images except SBOOT.bin (still working on how to flash the bootloader via recovery)
This means BOOT, SYSTEM, RECOVERY, CACHE, HIDDEN, MODEM(RADIO) can all be flashed from the factory firmware. No need for ODIN anymore.
(Note: to flash the modem it is necessary to rename MODEM.bin to MODEM.bin.img first)
TWRP 3.1.0-1 for Galaxy Tab S2 T710/T715/T810/T815 models - Lollipop 5.0.2/5.1.1 Marshmallow 6.0.1/Nougat 7.0
TWRP 3.0.2-1 for Galaxy Tab S2 T710/810 models - Lollipop 5.0.2/5.1.1 Marshmallow 6.0.1
TWRP 3.0.0-1 for Galaxy Tab S2 T710/715/810/815 models - Lollipop 5.0.2/ 5.1.1/6.0.1
TWRP 188.8.131.52 for Galaxy Tab S2 T710/715/810/815 models - Lollipop 5.0.2 and 5.1.1
LOLLIPOP 5.0.2 ONLY:
Device tree on Github
FLASH WITH ODIN OR FLASHFIRE OR EXTRACT THE RECOVERY.IMG AND FLASH WITH TWRP
Note: T717T/P, T817T/P users can flash T*10 or T*15 variant respectively.
NOTE: It is important to boot to recovery after flashing with Odin or twrp may not stick and will be replaced with stock recovery.
When flashing uncheck auto reboot in Odin, immediately after flashing manually reboot and boot into twrp.
Manual reboot is POWER + HOME +VOL DOWN then as soon as the screen goes blank immediately change to VOL UP whilst still holding the other buttons.
NOTE: ON SOME ANDROID 5.1.1 and 6.01 DEVICES IT IS NECESSARY TO GO TO:
Settings -> Developer Options -> OEM unlocking
AND ENABLE OEM UNLOCK FIRST OR YOU MAY ENCOUNTER 'BLOCKED BY FRP LOCK' WHEN FLASHING.
Flash SuperSU below with TWRP.
FEEDBACK IS APPRECIATED PLEASE
DONATE ME HERE IF YOU WANT TO BUY ME A BEER OR HIT THE THANKS BUTTON IF I HELPED YOU
Credits to Teamwin for their work. Suzook and my other testers.