A566WVLSACZHB – Galaxy A56 5G firmware

Build A566WVLSACZHB is a security update for the Galaxy A56 5G (SM-A566W) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 3, 2026 (method) and has reached 8 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 A566WVLS9CZG7 is blocked. Samsung still serves this file.

Model
SM-A566W
Android
Android 16
Type
Security
Bootloader bit
10
First released
Sep 3, 2026
Regions
8

Rollout timeline by region

The date each region code (CSC) first received A566WVLSACZHB, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ESKCanada (Eastlink)Sep 3, 2026day 0A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB
FMCCanada (Fido)Sep 3, 2026day 0A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB
GLWCanada (Freedom)Sep 3, 2026day 0A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB
KDOCanada (Koodo)Sep 3, 2026day 0A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB
RWCCanada (Rogers)Sep 3, 2026day 0A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB
TLSCanada (Telus)Sep 3, 2026day 0A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB
VTRCanada (Videotron)Sep 3, 2026day 0A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB
XACCanadaSep 3, 2026day 0A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB

Download and release notes

samloader download -m SM-A566W -r ESK -v A566WVLSACZHB/A566WOYVACZHB/A566WVLSACZHB

Samsung's release notes and security patch level for this update: SM-A566W / ESK on doc.samsungmobile.com. What each part of the build number means: decode A566WVLSACZHB.