F966WVLSABZE3 – Galaxy Z Fold7 firmware

Build F966WVLSABZE3 is a security update for the Galaxy Z Fold7 (SM-F966W) on Android 16 (One UI 8). It first appeared on Samsung's servers on May 25, 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 F966WVLU9BZDN is blocked. Samsung still serves this file.

Model
SM-F966W
Android
Android 16
Type
Security
Bootloader bit
10
First released
May 25, 2026
Regions
11

Rollout timeline by region

The date each region code (CSC) first received F966WVLSABZE3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
TLSCanada (Telus)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
VMCCanada (Virgin)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
VTRCanada (Videotron)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
XACCanadaMay 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
BMCCanada (Bell)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
BWACanadaMay 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
ESKCanada (Eastlink)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
FMCCanada (Fido)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
GLWCanada (Freedom)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
KDOCanada (Koodo)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3
RWCCanada (Rogers)May 25, 2026day 0F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3

Download and release notes

samloader download -m SM-F966W -r TLS -v F966WVLSABZE3/F966WOYVABZE3/F966WVLSABZE3

Samsung's release notes and security patch level for this update: SM-F966W / TLS on doc.samsungmobile.com. What each part of the build number means: decode F966WVLSABZE3.