[REQUEST] HP G62-b00 series (Intel) BIOS Unlock

[29linkin09park92]

UPDATE:
I've downloaded this version uploaded by the user gabiz_ro:
gabiz_ro_sp55430
This time if i select >iVGA the pc boot normally (no bricks), but when i open the bios setup i see that the setting has been automatically restored to >Hybrid
Same issue if i select >dVGA, he always go back to >Hybrid.
Why???

Thanks in advance guys

[29linkin09park92]

Ok its working with F10. Thank you!

Now I have an another problem. I want to enable display mode iGPU, but it doesn't save or something. When I reboot, its back to hybrid. Is this a problem with the unlock or with the BIOS?

Thank you again!

Hi, I have your identical problem. Have you solved it?

[Faithowl]

Hi. This is not my first request, but maybe it is the hardest haha.

I've got my hands on a "new" HP G62 intel core i3-350m, AMD Mobility Radeon 5470 Switching Graphics, but the AMD chip is fried up so, when I'm on windows it's ok with the Intel HD, but if you install the AMD drivers it crashes and does not boot up anymore.

I've seen other laptops with this configuration that have a bios option to select which card to use (either Integrated, Dedicated or Switching Graphics), so I'm calling experts around the world to see if is any hope of unlocking this feature for my BIOS. If it isn't possible, maybe a way to completely "remove" that AMD card so the SO does not find it at all.

My plans are to use the INTEL HD at first, but maybe someday I may repair this motherboard or simply get a new one, who knows, but at first this is my only option.

I hope you can help me!

Many thanks!.

[BDMaster]

Here You go :

http://rghost.net/7jSWNrfCR

Regards

[Faithowl]

Here You go :

http://rghost.net/7jSWNrfCR

Regards

Thank you so much but, sadly it doesn't work. 

The advanced options are there, but when I change video mode to iGPU, save and reboot, it comes back to Hybrid. I've read some other guy had same issue with this BIOS and remained unsolved so I guess it simply wont work no matter what.

Thank you another time and if you have any suggestion I will be very appreciated.

[mahosayn]

hi. Can anyone help me to switch my graphic card from bios?

http://ftp.hp.com/pub/softpaq/sp55001-55500/sp55430.exe

I need modified bios.
thanks

[BDMaster]

Here You go :

http://rghost.net/66cf9s77s

Let me know
Regards

[mahosayn]

Thanks alot.
I updated it works fine but when I switch graphics cards and saved, after restart it shows graphic cards still shows hybrid mode in bios.

[BDMaster]

Not possible make a search about Muxed and muxless !
Regards

[gabiz_ro]

Can be more clear about these terms?
My knowledge make me think like that:
Muxed -there is some switch (ofcourse electronic one) that switch LVDS lines from integrated video to (discrete?) external video.

Muxless - is something like only one GPU is connected to LVDS lines,data is passed to other GPU then resulting video signal received and routed to outputs.

My oppinion is that muxless design isn't any good than muxed one.Just to make things easy and cheap.

In this case (SP55430) I think board ID is 01439 same like one of my notebook.
This board use muxed design.I know because I have modded mine.Lucky enough to find similar mux switch (in fact was some switcher from motherboard LAN port to docking connector,but same package,almost same pinout).And most important,board was designated for this,data lines was all connected,just second mux ic,few resistors maybe and few wires in LVDS cable between board and LCD display. Imagine that cost may be under 1$,real big increase in manufacturing cost
But that limit variant available or user choice to upgrade to FHD LCD display.

Now related to problem.
Code in BIOS exists but may be incomplete.
Real switching of graphics card works in certain condition. (under windows,using original drivers,at startup time if you power on notebook only on battery)
Resposable for switching is EC (embedeed controller)
Maybe under OS switching is done via DSDT,then we must find what is happening then simulate this in BIOS.

-When I say LVDS lines I was wrong a little,not only LVDS but all other signals,VGA,DVI etc.

-But once value saved,at some location in CMOS if BIOS ignore it and start in hybrid mode make no sense.
Find other free address where save this setting,test it few times to be sure saving-reading works.At this moment will be only nothing,same hybrid mode in fact but in BIOS you'll see integrated hybrid deficated based on previous choice.
If this happens then maybe BIOS itself at initialization rewrite this offset to be sure is in hybrid mode.