Model recorded in original article: ASUS ZenBook S 14 OLED
Manufacturer: ASUS. Match this name and any hardware / BIOS variant with the label on your device. For network drivers, check the installed adapter vendor and device IDs in Device Manager.
Official source verification
Requested series / model label — select the full model below: ZenBook S 14 OLED. Checked 2026-10-04. ASUS official support page
Original page label: ASUS ZenBook S 14 OLED (2024). The year and marketing name in the old article are not used to infer compatibility. Match the complete model and hardware variant shown in the official records.
Confirm the exact BIOS / hardware variant. Read ASUS instructions, connect reliable AC power and do not interrupt the update. Keep your BitLocker recovery key available. Do not flash a file solely because its model name looks similar.
BIOS for ASUS EZ Flash Utility
Device vendor
Unknown — not verified
BIOS / hardware variant
UX5406SA
Version
309
Official release date
2026-03-04
File size
12.5 MB
Last verified (official record)
2026-10-04
Hardware / device IDs: unknown
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Confirm the exact BIOS / hardware variant. Read ASUS instructions, connect reliable AC power and do not interrupt the update. Keep your BitLocker recovery key available. Do not flash a file solely because its model name looks similar.
BIOS Update for Windows
Device vendor
Unknown — not verified
BIOS / hardware variant
UX5406SA
Version
308
Official release date
2025-08-21
File size
14.96 MB
Last verified (official record)
2026-10-04
Hardware / device IDs: unknown
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on. Caution! Active updates are possible during the Windows Update process!
(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)
Important Information: Optimize system performance
Description : To improve your system stability, you can download and update the firmware for your SSD. The update may take a few minutes. Do not interrupt the update to avoid potential issues, like system boot failures.
Important Information : To improve your system stability, you can download and update the firmware for your SSD. The update may take a few minutes. Do not interrupt the update to avoid potential issues, like system boot failures.