S947USQS3AZF1 – Galaxy S26+ firmware

Build S947USQS3AZF1 is a security update for the Galaxy S26+ (SM-S947U) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 15, 2026 (method) and has reached 8 regions so far. It raises the bootloader bit from 2 to 3: once installed, the device no longer accepts firmware with bit 2 or lower, so a downgrade to S947USQS2AZE1 is blocked. Samsung still serves this file.

Model
SM-S947U
Android
Android 16
Type
Security
Bootloader bit
3
First released
Jun 15, 2026
Regions
8

Rollout timeline by region

The date each region code (CSC) first received S947USQS3AZF1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
VZWUSA (Verizon)Jun 15, 2026day 0S947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1
ATTUSA (AT&T)Jun 15, 2026day 0S947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1
TMBUSA (T-Mobile)Jun 15, 2026day 0S947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1
TMKUSA (MetroPCS)Jun 15, 2026day 0S947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1
CCTUSA (Comcast)Jun 16, 2026+1 dayS947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1
DSAUSAJun 16, 2026+1 dayS947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1
DSHUSAJun 16, 2026+1 dayS947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1
USCUSA (US Cellular)Jun 21, 2026+6 daysS947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1

Download and release notes

samloader download -m SM-S947U -r VZW -v S947USQS3AZF1/S947UOYN3AZF1/S947USQS3AZF1

Samsung's release notes and security patch level for this update: SM-S947U / VZW on doc.samsungmobile.com. What each part of the build number means: decode S947USQS3AZF1.