G977UUCUAHWG2 – Galaxy S10 5G firmware

Build G977UUCUAHWG2 is a feature update for the Galaxy S10 5G (SM-G977U) on Android 12 (One UI 4). It first appeared on Samsung's servers on Jul 23, 2023 (method) and has reached 1 region 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 G977UUCS9HWD1 is blocked. Samsung still serves this file.

Model
SM-G977U
Android
Android 12
Type
Feature
Bootloader bit
10
First released
Jul 23, 2023
Regions
1

Rollout timeline by region

The date each region code (CSC) first received G977UUCUAHWG2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ATTUSA (AT&T)Jul 23, 2023day 0G977UUCUAHWG2/G977UATTAHWG2/G977UUCUAYWG2

Download and release notes

samloader download -m SM-G977U -r ATT -v G977UUCUAHWG2/G977UATTAHWG2/G977UUCUAYWG2

Samsung's release notes and security patch level for this update: SM-G977U / ATT on doc.samsungmobile.com. What each part of the build number means: decode G977UUCUAHWG2.