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Samsung Galaxy S21 5G (SM-G991B) Android 15 Firmware (G991BXXSGHYH1) – MXO | SamFrew

Home / Firmware / SM-G991B / MXO

Firmware G991BXXSGHYH1

Device Galaxy S21 5G

Model SM-G991B

Region MXO

OS Android 15

Release Date 8/4/2025

Upload Date 9/2/2025

PDA G991BXXSGHYH1

CSC G991BOWOGHYH1

Changelist 30959686

Size 9080166768 bytes (approx. 8.5 GB)