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Samsung Galaxy S21 5G (SM-G991U1) Android 15 Firmware (G991U1UEUEHYDA) – ATT | SamFrew

Home / Firmware / SM-G991U1 / ATT

Firmware G991U1UEUEHYDA

Device Galaxy S21 5G

Model SM-G991U1

Region ATT

OS Android 15

Release Date 4/16/2025

Upload Date 5/6/2025

PDA G991U1UEUEHYDA

CSC G991U1OYMEHYDA

Changelist 30959686

Size 8152986912 bytes (approx. 7.6 GB)