S546VLUDSLFZF1 – Galaxy A54 5G firmware
Build S546VLUDSLFZF1 is a security update for the Galaxy A54 5G (SM-S546VL)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 30, 2026 (method) and has reached
1 region so far. It raises the bootloader bit from 20 to 21: once installed, the device no longer accepts firmware with bit 20 or lower, so a downgrade to S546VLUDUKFZE9 is blocked. Samsung still serves this file.
- Model
- SM-S546VL
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 21
- First released
- Jun 30, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received S546VLUDSLFZF1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
TFN | USA (TracFone) | Jun 30, 2026 | day 0 | S546VLUDSLFZF1/S546VLTFNLFZF1/S546VLUDSLFZF1 |
Download and release notes
samloader download -m SM-S546VL -r TFN -v S546VLUDSLFZF1/S546VLTFNLFZF1/S546VLUDSLFZF1Samsung's release notes and security patch level for this update: SM-S546VL / TFN on doc.samsungmobile.com. What each part of the build number means: decode S546VLUDSLFZF1.