J330NKOU6CTK1 – Galaxy J3 firmware

Build J330NKOU6CTK1 is a feature update for the Galaxy J3 (SM-J330N) on Android 9. It first appeared on Samsung's servers on Dec 13, 2020 (method) and has reached 1 region so far. It raises the bootloader bit from 5 to 6: once installed, the device no longer accepts firmware with bit 5 or lower, so a downgrade to J330NKOU5CTF1 is blocked. Samsung still serves this file.

Model
SM-J330N
Android
Android 9
Type
Feature
Bootloader bit
6
First released
Dec 13, 2020
Regions
1

Rollout timeline by region

The date each region code (CSC) first received J330NKOU6CTK1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
KOOSouth KoreaDec 13, 2020day 0J330NKOU6CTK1/J330NKOO6CTK1/J330NKOU6CTK1

Download and release notes

samloader download -m SM-J330N -r KOO -v J330NKOU6CTK1/J330NKOO6CTK1/J330NKOU6CTK1

Samsung's release notes and security patch level for this update: SM-J330N / KOO on doc.samsungmobile.com. What each part of the build number means: decode J330NKOU6CTK1.