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Samsung Galaxy S21 5G (SM-G991B) Android 15 Firmware (G991BXXSJHZC2) – XID | SamFrew

Home / Firmware / SM-G991B / XID

Firmware G991BXXSJHZC2

Device Galaxy S21 5G

Model SM-G991B

Region XID

OS Android 15

Release Date 3/9/2026

Upload Date 3/19/2026

PDA G991BXXSJHZC2

CSC G991BOLEJHZC2

Changelist 30959686

Size 8271854800 bytes (approx. 7.7 GB)