BIOS updated to wrong model how to rollback, error Unable to open signature file

[Jam2509]

Hi,

I've updated wrong bios to my laptop hp ac123tx.

Board ID 80c2.

Problem :- While trying to roll back bios with bios update utility it says "unable to open signature file", due to the wrong bios my laptops heat quickly. Compatible bios F29 Rev A. Wrong Bios F30.

How to resolve the "Unable to open bios signature file" issue?

[Mans]

@Jam2509 

Hello,

This package provides a BIOS system update the version F.30 under the HP SoftPaq sp101098 is not designed/compatible for your computer.
It is compatible/designed with the following HP notebooks: HP 250 G4 Notebook PC, HP 256 G4 Notebook PC. Moreover,  So I recommend you to ignore this BIOS update.

In order to palliate the issue of overheating, please follow the instructions of the HP link Reducing Heat Inside the Laptop to Prevent Overheating.

Do not hesitate to contact us in case of need.

Best regards,🤠

[Lil_Boy_Blue]

Hi

As Mans has stated you have a problem and suggested a solution.

Can you give the SKU: of your PC as it is vital to find the correct BIOS.

SKU: if possible by this method
WinKey + R and type
msinfo32
Read Line 9
System SKU: N6K07EA#ABU

Please do not post Serial Numbers.

So that we can check the version?

[Mans]

@Jam2509 and @Lil_Boy_Blue 

Hi,

Unfortunately, the BIOS of the 15-ac123tx laptop is already up to date, so there is no need to update it.
The currently installed BIOS version is F.29, so it is the one proposed by HP below.

https://support.hp.com/nz-en/drivers/selfservice/swdetails/hp-15-ac100-notebook-pc-series/8499326/mo...

Best regards,

[Jam2509]

I am asking how to downgrade the bios. And you are suggesting to reduce heat.

Please read carefully. My problem is while doing bios rollback got error that unable to open signature file.

Help with this if you can but don't post rubbish like reducing heat.

[Jam2509]

I have already updated bios with F30.

I want to downgrade it with F29.

If you can help post answer but don't post rubbish.

While downgrade I got error in bios update utility that "unable to open signature file"

[Mans]

@Jam2509 

Thanks for your return,

Unfortunately, once the F.29 or F.30 update is installed you cannot revert to an earlier version of the BIOS. There is no other update than the one proposed on your computer's page.

Please update the HP PC Hardware Diagnostics UEFI interface from the HP link below.

http://ftp.hp.com/pub/softpaq/sp101501-102000/sp101502.exe

In order to help you, please follow the instructions in the "Update the BIOS manually from a USB Flash drive (outside of Windows)" section of the following HP link: Updating the BIOS (Basic Input Output System).

The BIOS update is available below.

• Software and drivers for HP Notebook 15-ac123tx - HP.com 

Do not hesitate to contact us in case of need.

Best regards,

[Jam2509]

 see above error message

[Jam2509]

Stop posting rubbish.

You can find all these on internet.

Can you tell how to resolve, "unable to open/read signature file"?

[Mans]

@Jam2509 

Thanks for your return,

Did you select the file named 80CD.bin before starting the BIOS update?
If not, please select 80CD.bin.

Do not hesitate to contact us in case of need.

Best regards,