S731U1UES9BZF9 – Galaxy S25 FE firmware
Build S731U1UES9BZF9 is a security update for the Galaxy S25 FE (SM-S731U1)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 2, 2026 (method) and has reached
14 regions so far. It raises the bootloader bit from 8 to 9: once installed, the device no longer accepts firmware with bit 8 or lower, so a downgrade to S731U1UES8BZF5 is blocked. Samsung still serves this file.
- Model
- SM-S731U1
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 9
- First released
- Sep 2, 2026
- Regions
- 14
Rollout timeline by region
The date each region code (CSC) first received S731U1UES9BZF9, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
ACG | USA (C Spire) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
AIO | USA (Cricket) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
ATT | USA (AT&T) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
CCT | USA (Comcast) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
DSA | USA | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
DSH | USA | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
LRA | USA (Bluegrass) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
TFN | USA (TracFone) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
TMB | USA (T-Mobile) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
TMK | USA (MetroPCS) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
USC | USA (US Cellular) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
VZW | USA (Verizon) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
XAA | USA (unlocked) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
XAR | USA (Cellular South) | Sep 2, 2026 | day 0 | S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9 |
Download and release notes
samloader download -m SM-S731U1 -r XAA -v S731U1UES9BZF9/S731U1OYM9BZF9/S731U1UES9BZF9Samsung's release notes and security patch level for this update: SM-S731U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode S731U1UES9BZF9.