A576USQS4AZI3 – Galaxy A57 5G firmware
Build A576USQS4AZI3 is a security update for the Galaxy A57 5G (SM-A576U)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 15, 2026 (method) and has reached
3 regions so far. It raises the bootloader bit from 3 to 4: once installed, the device no longer accepts firmware with bit 3 or lower, so a downgrade to A576USQS3AZHA is blocked. Samsung still serves this file.
- Model
- SM-A576U
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 4
- First released
- Sep 15, 2026
- Regions
- 3
Rollout timeline by region
The date each region code (CSC) first received A576USQS4AZI3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
ATT | USA (AT&T) | Sep 15, 2026 | day 0 | A576USQS4AZI3/A576UOYN4AZI3/A576USQS4AZI3 |
AIO | USA (Cricket) | Sep 15, 2026 | day 0 | A576USQS4AZI3/A576UOYN4AZI3/A576USQS4AZI3 |
CCT | USA (Comcast) | Sep 15, 2026 | day 0 | A576USQS4AZI3/A576UOYN4AZI3/A576USQS4AZI3 |
Download and release notes
samloader download -m SM-A576U -r ATT -v A576USQS4AZI3/A576UOYN4AZI3/A576USQS4AZI3Samsung's release notes and security patch level for this update: SM-A576U / ATT on doc.samsungmobile.com. What each part of the build number means: decode A576USQS4AZI3.