Hello everyone,

I recently bought a non-working Asus Zenbook Pro Duo OLED UX8402ZA that was listed for parts only. The seller mentioned that it had no display output but that the charging lights worked.

When the laptop arrived (without a charger and SSD), I connected a charger and confirmed with a multimeter that it was charging the battery. However, when I tried to power it on, only the backlight of the secondary display came on. There was no image, and it didn’t boot into the BIOS.

I decided to try flashing a new BIOS, but since I didn’t want to desolder...

This specification for the ASUS ZenBook Zenbook 14 Flip OLED UN5401QA-KN144W Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Zenbook 14 Flip OLED UN5401QA-KN144W boardview and Zenbook 14 Flip OLED UN5401QA-KN144W schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that...

This specification for the ASUS ZenBook S UX370UA Hybrid (2-in-1) can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the S UX370UA boardview and S UX370UA schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...

With ASUS, not everything is quite so simple. I will show you my way. It may be longer or harder but it is the right way to do it in my humble opinion.

For example, you can have 3 similar ASUS motherboards, all being the same model, all of which will have different BIOS versions.

I will give you an example and my version of preparing BIOS from ASUS website and in the process I am always cleaning Intel ME while doing it so you have fully cleaned BIOS, no DMI data, no password, nothing.

This is the picture of 3 similar ASUS motherboards, all of them being X555LD...

Hello,

I have spent the last hour on this and I guess this is just over my head, so here I am.

I have an ASUS TUF GAMING Z790-PLUS WIFI motherboard here that needs to have the BIOS updated in order to accept the latest CPUs.

The BIOS chips seem to come as a set of two: GD25B64ESIG and GD25B128ESIG. My guess is one of them is a fail-safe for the main BIOS? I really don't know. Or one of them is ME and other is BIOS? I don't know.

Anyway, I took dumps of both chips and then downloaded the latest update for this motherboard from ASUS's website...