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Samsung Galaxy S21 5G (SM-G991B) Android 15 Firmware (G991BXXSGHYH4) – XNZ | SamFrew

Home / Firmware / SM-G991B / XNZ

Firmware G991BXXSGHYH4

Device Galaxy S21 5G

Model SM-G991B

Region XNZ

OS Android 15

Release Date 8/14/2025

Upload Date 8/28/2025

PDA G991BXXSGHYH4

CSC G991BOXMGHYH1

Changelist 30959686

Size 9060981472 bytes (approx. 8.4 GB)