A166WVLS7CZDG – Galaxy A16 5G firmware

Build A166WVLS7CZDG 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 May 14, 2026 (method) and has reached 11 regions so far. It raises the bootloader bit from 6 to 7: once installed, the device no longer accepts firmware with bit 6 or lower, so a downgrade to A166WVLS6CZB7 is blocked. Samsung still serves this file.

Model
SM-A166W
Android
Android 16
Type
Security
Bootloader bit
7
First released
May 14, 2026
Regions
11

Rollout timeline by region

The date each region code (CSC) first received A166WVLS7CZDG, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BMCCanada (Bell)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
BWACanadaMay 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
ESKCanada (Eastlink)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
FMCCanada (Fido)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
GLWCanada (Freedom)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
KDOCanada (Koodo)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
RWCCanada (Rogers)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
TLSCanada (Telus)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
VMCCanada (Virgin)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
VTRCanada (Videotron)May 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG
XACCanadaMay 14, 2026day 0A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG

Download and release notes

samloader download -m SM-A166W -r BMC -v A166WVLS7CZDG/A166WOYV7CZDG/A166WVLS7CZDG

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 A166WVLS7CZDG.