X518USQSHEZI3 – Galaxy Tab S9 FE firmware
Build X518USQSHEZI3 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 Sep 29, 2026 (method) and has reached
5 regions so far. It raises the bootloader bit from 16 to 17: once installed, the device no longer accepts firmware with bit 16 or lower, so a downgrade to X518USQSGEZH5 is blocked. Samsung still serves this file.
- Model
- SM-X518U
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 17
- First released
- Sep 29, 2026
- Regions
- 5
Rollout timeline by region
The date each region code (CSC) first received X518USQSHEZI3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
ATT | USA (AT&T) | Sep 29, 2026 | day 0 | X518USQSHEZI3/X518UOYNHEZI3/X518USQSHEZI3 |
TMB | USA (T-Mobile) | Oct 1, 2026 | +2 days | X518USQSHEZI3/X518UOYNHEZI3/X518USQSHEZI3 |
TMK | USA (MetroPCS) | Oct 1, 2026 | +2 days | X518USQSHEZI3/X518UOYNHEZI3/X518USQSHEZI3 |
USC | USA (US Cellular) | Oct 1, 2026 | +2 days | X518USQSHEZI3/X518UOYNHEZI3/X518USQSHEZI3 |
VZW | USA (Verizon) | Oct 5, 2026 | +6 days | X518USQSHEZI3/X518UOYNHEZI3/X518USQSHEZI3 |
Download and release notes
samloader download -m SM-X518U -r ATT -v X518USQSHEZI3/X518UOYNHEZI3/X518USQSHEZI3Samsung's release notes and security patch level for this update: SM-X518U / ATT on doc.samsungmobile.com. What each part of the build number means: decode X518USQSHEZI3.