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Samsung Galaxy S21 5G (SM-G991B) Android 15 Firmware (G991BXXSFHYE1) – UPO | SamFrew

Home / Firmware / SM-G991B / UPO

Firmware G991BXXSFHYE1

Device Galaxy S21 5G

Model SM-G991B

Region UPO

OS Android 15

Release Date 5/21/2025

Upload Date 6/10/2025

PDA G991BXXSFHYE1

CSC G991BOWOFHYE1

Changelist 30959686

Size 9080974624 bytes (approx. 8.5 GB)