X518USQSFEZG3 – Galaxy Tab S9 FE firmware
Build X518USQSFEZG3 is a security update for the Galaxy Tab S9 FE (SM-X518U)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 29, 2026 (method) and has reached
5 regions so far. It raises the bootloader bit from 14 to 15: once installed, the device no longer accepts firmware with bit 14 or lower, so a downgrade to X518UVLSEEZF1 is blocked. Samsung still serves this file.
- Model
- SM-X518U
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 15
- First released
- Jul 29, 2026
- Regions
- 5
Rollout timeline by region
The date each region code (CSC) first received X518USQSFEZG3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
TMB | USA (T-Mobile) | Jul 29, 2026 | day 0 | X518USQSFEZG3/X518UOYNFEZG3/X518USQSFEZG3 |
TMK | USA (MetroPCS) | Jul 29, 2026 | day 0 | X518USQSFEZG3/X518UOYNFEZG3/X518USQSFEZG3 |
USC | USA (US Cellular) | Jul 29, 2026 | day 0 | X518USQSFEZG3/X518UOYNFEZG3/X518USQSFEZG3 |
ATT | USA (AT&T) | Jul 30, 2026 | +1 day | X518USQSFEZG3/X518UOYNFEZG3/X518USQSFEZG3 |
VZW | USA (Verizon) | Aug 3, 2026 | +5 days | X518USQSFEZG3/X518UOYNFEZG3/X518USQSFEZG3 |
Download and release notes
samloader download -m SM-X518U -r TMB -v X518USQSFEZG3/X518UOYNFEZG3/X518USQSFEZG3Samsung's release notes and security patch level for this update: SM-X518U / TMB on doc.samsungmobile.com. What each part of the build number means: decode X518USQSFEZG3.