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Samsung Galaxy S21 5G (SM-G991U1) Android 15 Firmware (G991U1UESJHZB1) – AIO | SamFrew

Home / Firmware / SM-G991U1 / AIO

Firmware G991U1UESJHZB1

Device Galaxy S21 5G

Model SM-G991U1

Region AIO

OS Android 15

Release Date 2/24/2026

Upload Date 3/23/2026

PDA G991U1UESJHZB1

CSC G991U1OYMJHZB1

Changelist 30959686

Size 8155547984 bytes (approx. 7.6 GB)