J3300ZCU4CTK1 – Galaxy J3 firmware

Build J3300ZCU4CTK1 is a feature update for the Galaxy J3 (SM-J3300) on Android 9. It first appeared on Samsung's servers on Dec 17, 2020 (method) and has reached 1 region so far. It keeps bootloader bit 4, so downgrading to the previous build J3300ZCS4CTG1 is still possible. Samsung still serves this file.

Model
SM-J3300
Android
Android 9
Type
Feature
Bootloader bit
4
First released
Dec 17, 2020
Regions
1

Rollout timeline by region

The date each region code (CSC) first received J3300ZCU4CTK1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
CHCChinaDec 17, 2020day 0J3300ZCU4CTK1/J3300CHC4CTK1/J3300ZCU4CTK1

Download and release notes

samloader download -m SM-J3300 -r CHC -v J3300ZCU4CTK1/J3300CHC4CTK1/J3300ZCU4CTK1

Samsung's release notes and security patch level for this update: SM-J3300 / CHC on doc.samsungmobile.com. What each part of the build number means: decode J3300ZCU4CTK1.