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Samsung Galaxy S21 5G (SM-G991U) Android 15 Firmware (G991USQSHHYI1) – USC | SamFrew

Home / Firmware / SM-G991U / USC

Firmware G991USQSHHYI1

Device Galaxy S21 5G

Model SM-G991U

Region USC

OS Android 15

Release Date 9/3/2025

Upload Date 10/6/2025

PDA G991USQSHHYI1

CSC G991UOYNHHYI1

Changelist 30959686

Size 8403651552 bytes (approx. 7.8 GB)