J530KKKU5CTB1 – Galaxy J5 firmware

Build J530KKKU5CTB1 is a feature update for the Galaxy J5 (SM-J530K) on Android 9. It first appeared on Samsung's servers on Mar 4, 2020 (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 J530KKKU4CSL1 is blocked. Samsung still serves this file.

Model
SM-J530K
Android
Android 9
Type
Feature
Bootloader bit
5
First released
Mar 4, 2020
Regions
1

Rollout timeline by region

The date each region code (CSC) first received J530KKKU5CTB1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
KTCSouth Korea (KT)Mar 4, 2020day 0J530KKKU5CTB1/J530KKTC5CTB1/J530KKKU5CTA1

Download and release notes

samloader download -m SM-J530K -r KTC -v J530KKKU5CTB1/J530KKTC5CTB1/J530KKKU5CTA1

Samsung's release notes and security patch level for this update: SM-J530K / KTC on doc.samsungmobile.com. What each part of the build number means: decode J530KKKU5CTB1.