G8858ZMS6CUD2 – Galaxy A9 Star firmware

Build G8858ZMS6CUD2 is a security update for the Galaxy A9 Star (SM-G8858) on Android 10. It first appeared on Samsung's servers on Apr 22, 2021 (method) and has reached 1 region 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 G8858ZMU5CTL1 is blocked. Samsung still serves this file.

Model
SM-G8858
Android
Android 10
Type
Security
Bootloader bit
6
First released
Apr 22, 2021
Regions
1

Rollout timeline by region

The date each region code (CSC) first received G8858ZMS6CUD2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
CHMChina (Mobile)Apr 22, 2021day 0G8858ZMS6CUD2/G8858CHM6CUD2/G8858ZMS6CUD2

Download and release notes

samloader download -m SM-G8858 -r CHM -v G8858ZMS6CUD2/G8858CHM6CUD2/G8858ZMS6CUD2

Samsung's release notes and security patch level for this update: SM-G8858 / CHM on doc.samsungmobile.com. What each part of the build number means: decode G8858ZMS6CUD2.