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

Home / Firmware / SM-G991B / XID

Firmware G991BXXSGHYH1

Device Galaxy S21 5G

Model SM-G991B

Region XID

OS Android 15

Release Date 8/4/2025

Upload Date 8/29/2025

PDA G991BXXSGHYH1

CSC G991BOLEGHYH1

Changelist 30959686

Size 8268310128 bytes (approx. 7.7 GB)