A166WVLS6CZB7 – Galaxy A16 5G firmware

Build A166WVLS6CZB7 is a security update for the Galaxy A16 5G (SM-A166W) on Android 16 (One UI 8). It first appeared on Samsung's servers on Mar 19, 2026 (method) and has reached 11 regions so far. It raises the bootloader bit from 5 to 6: once installed, the device no longer accepts firmware with bit 5 or lower, so a downgrade to A166WVLS5CZA8 is blocked. Samsung still serves this file.

Model
SM-A166W
Android
Android 16
Type
Security
Bootloader bit
6
First released
Mar 19, 2026
Regions
11

Rollout timeline by region

The date each region code (CSC) first received A166WVLS6CZB7, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BMCCanada (Bell)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
BWACanadaMar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
ESKCanada (Eastlink)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
FMCCanada (Fido)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
GLWCanada (Freedom)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
KDOCanada (Koodo)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
RWCCanada (Rogers)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
TLSCanada (Telus)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
VMCCanada (Virgin)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
VTRCanada (Videotron)Mar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7
XACCanadaMar 19, 2026day 0A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7

Download and release notes

samloader download -m SM-A166W -r BMC -v A166WVLS6CZB7/A166WOYV6CZB7/A166WVLS6CZB7

Samsung's release notes and security patch level for this update: SM-A166W / BMC on doc.samsungmobile.com. What each part of the build number means: decode A166WVLS6CZB7.