F966WVLUDCZJB – Galaxy Z Fold7 firmware

Build F966WVLUDCZJB is a feature update for the Galaxy Z Fold7 (SM-F966W) on Android 17 (One UI 9). It first appeared on Samsung's servers on Nov 9, 2026 (method) and has reached 11 regions so far. It raises the bootloader bit from 12 to 13: once installed, the device no longer accepts firmware with bit 12 or lower, so a downgrade to F966WVLUCCZIH is blocked. Samsung still serves this file.

Model
SM-F966W
Android
Android 17
Type
Feature
Bootloader bit
13
First released
Nov 9, 2026
Regions
11

Rollout timeline by region

The date each region code (CSC) first received F966WVLUDCZJB, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
GLWCanada (Freedom)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
KDOCanada (Koodo)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
RWCCanada (Rogers)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
TLSCanada (Telus)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
VMCCanada (Virgin)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
VTRCanada (Videotron)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
XACCanadaNov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
BMCCanada (Bell)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
BWACanadaNov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
ESKCanada (Eastlink)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB
FMCCanada (Fido)Nov 9, 2026day 0F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB

Download and release notes

samloader download -m SM-F966W -r GLW -v F966WVLUDCZJB/F966WOYVDCZJB/F966WVLUDCZJB

Samsung's release notes and security patch level for this update: SM-F966W / GLW on doc.samsungmobile.com. What each part of the build number means: decode F966WVLUDCZJB.