G9550ZHS6DUD1 – Galaxy S8+ firmware

Build G9550ZHS6DUD1 is a security update for the Galaxy S8+ (SM-G9550) on Android 9. It first appeared on Samsung's servers on Apr 26, 2021 (method) and has reached 1 region so far. It keeps bootloader bit 6, so downgrading to the previous build G9550ZCU6DUC1 is still possible. Samsung still serves this file.

Model
SM-G9550
Android
Android 9
Type
Security
Bootloader bit
6
First released
Apr 26, 2021
Regions
1

Rollout timeline by region

The date each region code (CSC) first received G9550ZHS6DUD1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
TGYHong KongApr 26, 2021day 0G9550ZHS6DUD1/G9550ZZH6DUD1/G9550ZHS6DUD1

Download and release notes

samloader download -m SM-G9550 -r TGY -v G9550ZHS6DUD1/G9550ZZH6DUD1/G9550ZHS6DUD1

Samsung's release notes and security patch level for this update: SM-G9550 / TGY on doc.samsungmobile.com. What each part of the build number means: decode G9550ZHS6DUD1.