G950U1UEU8DUD3 – Galaxy S8 firmware

Build G950U1UEU8DUD3 is a feature update for the Galaxy S8 (SM-G950U1) on Android 9. It first appeared on Samsung's servers on May 9, 2021 (method) and has reached 14 regions so far. It keeps bootloader bit 8, so downgrading to the previous build G950U1UES8DUB1 is still possible. Samsung still serves this file.

Model
SM-G950U1
Android
Android 9
Type
Feature
Bootloader bit
8
First released
May 9, 2021
Regions
14

Rollout timeline by region

The date each region code (CSC) first received G950U1UEU8DUD3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
AIOUSA (Cricket)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
ATTUSA (AT&T)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
BSTUSA (Boost)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
LRAUSA (Bluegrass)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
SPRUSA (Sprint)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
TMBUSA (T-Mobile)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
TMKUSA (MetroPCS)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
USCUSA (US Cellular)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
VMUUSA (Virgin)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
VZWUSA (Verizon)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
XAAUSA (unlocked)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
XASUSA (Sprint)May 9, 2021day 0G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3
TFNUSA (TracFone)May 11, 2021+2 daysG950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3

Download and release notes

samloader download -m SM-G950U1 -r XAA -v G950U1UEU8DUD3/G950U1OYM8DUD3/G950U1UEU8DUD3

Samsung's release notes and security patch level for this update: SM-G950U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode G950U1UEU8DUD3.