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Home / Firmware / SM-F721U / ATT

Firmware F721USQS9IZB6

Device Galaxy Z Flip4

Model SM-F721U

Region ATT

OS Android 16

Release Date 2/13/2026

Upload Date 3/2/2026

PDA F721USQS9IZB6

CSC F721UOYN9IZB6

Changelist 31998945

Size 9858785472 bytes (approx. 9.2 GB)

Samsung Galaxy Z Flip4 (SM-F721U) Android 16 Firmware (F721USQS9IZB6) – ATT | SamFrew