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Home / Firmware / SM-G991U1 / USC

Firmware G991U1UESJHZAA

Device Galaxy S21 5G

Model SM-G991U1

Region USC

OS Android 15

Release Date 1/19/2026

Upload Date 1/29/2026

PDA G991U1UESJHZAA

CSC G991U1OYMJHZAA

Changelist 30959686

Size 8155643248 bytes (approx. 7.6 GB)

Samsung Galaxy S21 5G (SM-G991U1) Android 15 Firmware (G991U1UESJHZAA) – USC | SamFrew