S931WVLUACZF1 – Galaxy S25 firmware

Build S931WVLUACZF1 is a feature update for the Galaxy S25 (SM-S931W) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 15, 2026 (method) and has reached 11 regions so far. It raises the bootloader bit from 9 to 10: once installed, the device no longer accepts firmware with bit 9 or lower, so a downgrade to S931WVLU9CZDP is blocked. Samsung still serves this file.

Model
SM-S931W
Android
Android 16
Type
Feature
Bootloader bit
10
First released
Jun 15, 2026
Regions
11

Rollout timeline by region

The date each region code (CSC) first received S931WVLUACZF1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BMCCanada (Bell)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
BWACanadaJun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
ESKCanada (Eastlink)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
FMCCanada (Fido)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
GLWCanada (Freedom)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
KDOCanada (Koodo)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
RWCCanada (Rogers)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
TLSCanada (Telus)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
VMCCanada (Virgin)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
VTRCanada (Videotron)Jun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1
XACCanadaJun 15, 2026day 0S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1

Download and release notes

samloader download -m SM-S931W -r BMC -v S931WVLUACZF1/S931WOYVACZF1/S931WVLUACZF1

Samsung's release notes and security patch level for this update: SM-S931W / BMC on doc.samsungmobile.com. What each part of the build number means: decode S931WVLUACZF1.