T835NKOU5CUD3 – Galaxy Tab S4 firmware

Build T835NKOU5CUD3 is a feature update for the Galaxy Tab S4 (SM-T835N) on Android 10. It first appeared on Samsung's servers on May 12, 2021 (method) and has reached 1 region so far. It raises the bootloader bit from 4 to 5: once installed, the device no longer accepts firmware with bit 4 or lower, so a downgrade to T835NKOU4CTK2 is blocked. Samsung still serves this file.

Model
SM-T835N
Android
Android 10
Type
Feature
Bootloader bit
5
First released
May 12, 2021
Regions
1

Rollout timeline by region

The date each region code (CSC) first received T835NKOU5CUD3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
KOOSouth KoreaMay 12, 2021day 0T835NKOU5CUD3/T835NKOO5CUD3/T835NKOU5CUD2

Download and release notes

samloader download -m SM-T835N -r KOO -v T835NKOU5CUD3/T835NKOO5CUD3/T835NKOU5CUD2

Samsung's release notes and security patch level for this update: SM-T835N / KOO on doc.samsungmobile.com. What each part of the build number means: decode T835NKOU5CUD3.