Flashing a custom recovery using Odin will trip Samsung's . This is a security fuse that, once blown, cannot be reset.
You're looking for a guide on how to download the t210.twrp.2.8.0.0.tar.md5 file, which is likely a TWRP (Team Win Recovery Project) recovery image for a specific device.
: This signifies the device codename. It is built strictly for the Samsung Galaxy Tab 3 7.0 (SM-T210) Wi-Fi variant.
The instant the screen goes dark, immediately switch your fingers to hold simultaneously.
: The .tar.md5 extension indicates it is a checksum-verified archive intended for the "AP" or "PDA" slot in Odin .
Since the file is in .tar.md5 , you must first extract the raw .img file: