S931USQSBCZF5 – Galaxy S25 firmware

Build S931USQSBCZF5 is a security update for the Galaxy S25 (SM-S931U) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 14, 2026 (method) and has reached 10 regions so far. It raises the bootloader bit from 10 to 11: once installed, the device no longer accepts firmware with bit 10 or lower, so a downgrade to S931USQUACZF1 is blocked. Samsung still serves this file.

Model
SM-S931U
Android
Android 16
Type
Security
Bootloader bit
11
First released
Jul 14, 2026
Regions
10

Rollout timeline by region

The date each region code (CSC) first received S931USQSBCZF5, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
CCTUSA (Comcast)Jul 14, 2026day 0S931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
DSAUSAJul 14, 2026day 0S931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
DSHUSAJul 14, 2026day 0S931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
TMBUSA (T-Mobile)Jul 14, 2026day 0S931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
TMKUSA (MetroPCS)Jul 14, 2026day 0S931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
VZWUSA (Verizon)Jul 14, 2026day 0S931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
AIOUSA (Cricket)Jul 15, 2026+1 dayS931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
ATTUSA (AT&T)Jul 15, 2026+1 dayS931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
XAAUSA (unlocked)Jul 15, 2026+1 dayS931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5
USCUSA (US Cellular)Jul 20, 2026+6 daysS931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5

Download and release notes

samloader download -m SM-S931U -r XAA -v S931USQSBCZF5/S931UOYNBCZF5/S931USQSBCZF5

Samsung's release notes and security patch level for this update: SM-S931U / XAA on doc.samsungmobile.com. What each part of the build number means: decode S931USQSBCZF5.