twrp3021smt560tar / TWRP Recovery Image for Samsung Device Format: .tar.md5 (Odin-flashable archive) TWRP Version: 3.0.2-1 Target Device: Samsung Galaxy Grand Prime (Likely SM-G530T/T1) or similar variants.
upd likely stands for or User Data . In modding forums, users often append notes to filenames to remember what the file does. It might indicate: