A556SKSUBEZJ1 – Galaxy Quantum5 firmware
Build A556SKSUBEZJ1 is a feature update for the Galaxy Quantum5 (SM-A556S)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 20, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 11, so downgrading to the previous build A556SKSSBDZI1 is still possible. Samsung still serves this file.
- Model
- SM-A556S
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 11
- First released
- Oct 20, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received A556SKSUBEZJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
SKC | South Korea (SKT) | Oct 20, 2026 | day 0 | A556SKSUBEZJ1/A556SSKCBEZJ1/A556SKSUBEZI8 |
Download and release notes
samloader download -m SM-A556S -r SKC -v A556SKSUBEZJ1/A556SSKCBEZJ1/A556SKSUBEZI8Samsung's release notes and security patch level for this update: SM-A556S / SKC on doc.samsungmobile.com. What each part of the build number means: decode A556SKSUBEZJ1.