A520SKSU5CSK1 – GALAXY A5 firmware

Build A520SKSU5CSK1 is a feature update for the GALAXY A5 (SM-A520S) on Android 8. It first appeared on Samsung's servers on Dec 15, 2019 (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 A520SKSU4CSH1 is blocked. Samsung has pulled this build: the file is no longer served (what this means).

Model
SM-A520S
Android
Android 8
Type
Feature
Bootloader bit
5
First released
Dec 15, 2019
Regions
1

Rollout timeline by region

The date each region code (CSC) first received A520SKSU5CSK1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
SKCSouth Korea (SKT)Dec 15, 2019day 0A520SKSU5CSK1/A520SSKC5CSK1/A520SKSU5CSK1

Download and release notes

samloader download -m SM-A520S -r SKC -v A520SKSU5CSK1/A520SSKC5CSK1/A520SKSU5CSK1

Samsung's release notes and security patch level for this update: SM-A520S / SKC on doc.samsungmobile.com. What each part of the build number means: decode A520SKSU5CSK1.