G9300ZCS4CSG3 – Galaxy S7 firmware

Build G9300ZCS4CSG3 is a security update for the Galaxy S7 (SM-G9300) on Android 8. It first appeared on Samsung's servers on Aug 6, 2019 (method) and has reached 1 region so far. It raises the bootloader bit from 2 to 4: once installed, the device no longer accepts firmware with bit 2 or lower, so a downgrade to G9300ZCU2BRD1 is blocked. Samsung has pulled this build: the file is no longer served (what this means).

Model
SM-G9300
Android
Android 8
Type
Security
Bootloader bit
4
First released
Aug 6, 2019
Regions
1

Rollout timeline by region

The date each region code (CSC) first received G9300ZCS4CSG3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
CHCChinaAug 6, 2019day 0G9300ZCS4CSG3/G9300CHC4CSG3/G9300ZCS4CSG3

Download and release notes

samloader download -m SM-G9300 -r CHC -v G9300ZCS4CSG3/G9300CHC4CSG3/G9300ZCS4CSG3

Samsung's release notes and security patch level for this update: SM-G9300 / CHC on doc.samsungmobile.com. What each part of the build number means: decode G9300ZCS4CSG3.