A546USQSNFZJ2 – Galaxy A54 5G firmware
Build A546USQSNFZJ2 is a security update for the Galaxy A54 5G (SM-A546U)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Oct 18, 2026 (method) and has reached
8 regions so far. It keeps bootloader bit 23, so downgrading to the previous build A546USQSNFZI2 is still possible. Samsung still serves this file.
- Model
- SM-A546U
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 23
- First released
- Oct 18, 2026
- Regions
- 8
Rollout timeline by region
The date each region code (CSC) first received A546USQSNFZJ2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
AIO | USA (Cricket) | Oct 18, 2026 | day 0 | A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2 |
ATT | USA (AT&T) | Oct 18, 2026 | day 0 | A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2 |
CCT | USA (Comcast) | Oct 19, 2026 | +1 day | A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2 |
DSA | USA | Oct 19, 2026 | +1 day | A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2 |
DSH | USA | Oct 19, 2026 | +1 day | A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2 |
TMB | USA (T-Mobile) | Oct 19, 2026 | +1 day | A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2 |
TMK | USA (MetroPCS) | Oct 19, 2026 | +1 day | A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2 |
USC | USA (US Cellular) | Nov 4, 2026 | +17 days | A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2 |
Download and release notes
samloader download -m SM-A546U -r AIO -v A546USQSNFZJ2/A546UOYNNFZJ2/A546USQSNFZJ2Samsung's release notes and security patch level for this update: SM-A546U / AIO on doc.samsungmobile.com. What each part of the build number means: decode A546USQSNFZJ2.