If the tablet reboots into the standard Samsung system instead of TWRP:
First, let’s decode the filename:
The number 3021 explicitly refers to . This is a specific release from the TWRP 3.0.x branch, which was common around 2016-2017. Version 3.0.2-1 brought several critical improvements over earlier versions, including: twrp3021smt560tar
Flashing custom recoveries carries a risk. You could void your warranty or potentially "brick" your device if done incorrectly. Proceed at your own risk. If the tablet reboots into the standard Samsung