Hello,
I'm new to the forum and I'm just wondering if anyone can help me enabling the onboard graphics and disable the dedicated graphics.
I've been having issues with the dedicated lately show no display at times so I'm hoping using the onboard will add some life to my laptop.
link to the bios: sp60458.exe on hp website. and it's the 01853.fd when I tried to hexedit the backup I made.

Thank you in advance.

Edit by Fernando: Thread title simplified and customized

Hello.
Without having an SPI chip programmer you can not really do anything with this BIOS.

Hi Sweet Kitten, thank you for the reply. I'm actually thinking about doing it, I have the programmer but I read it somewhere there may be some checks and may get stucked on boot loop. Is there any specifics when flashing it via programmer? Thanks again.

Zitat von rhein021 im Beitrag #3

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I read it somewhere there may be some checks and may get stucked on boot loop.

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Thanks again, I appreciate it if you could maybe make it or if possible to share how you're going to do it?

[img]https://ibb.co/JjVwq1q[/img]
here's what I tried but no luck after saving the changes and flashing it through dos environment.
I've used phoenix tool which decrypted the bios file and loaded it through H2OEZE-W

Zitat von rhein021 im Beitrag #5

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or if possible to share how you're going to do it?

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Thank you I appreciate it. When you get a chance, do you mind editing this bios file?

That post is very informative however I'm still trying to wrap my head around it lol.
I was trying to extract the menu information for unlocking too if possible but the ifr extractor quits before saving the information.

Anyhow I'll probably be ok with just getting the dedicated graphics disabled and just use the integrated graphics if possible.

Zitat von rhein021 im Beitrag #7

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do you mind editing this bios file?

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Can you help with me with this bios for spi flash? I believe the edit I made here is fine https://ibb.co/JjVwq1q

I tried looking for the signature check hoping this is the right one


I search for the signature HSS$ and found 4 places, I extracted the body on the first result as well as the last TE Image

Here's what I found in ida when I searched for the hex of $HSS inverted


Should I follow the jump or go back up and bypass this call?, looks very different from the screenshots I've seen here

this is the other one on the DXE PEI



I read it on other threads to just find the caller of this subroutine and bypass this call totally?





I also notice on the UEFI Tool, I don't have the option to replace



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Also if all edits are good, is it just a matter of loading the edited bios file to spi programmer and flash it?
You mention loading the said file

Zitat von Sweet Kitten im Beitrag #8

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01853.fd

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