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[DISCUSS] Advanced option on Acer V5-471
#1
Hi, I need change my HD4000 graphic card's shared memory on my laptop - Acer V5-471. To do so, the BIOS advanced option need to be unlocked.
Is there anybody to help me with it? Some useful link would help, too.

Thx.

http://global-download.acer.com/GDFiles/...5487565718&Step1=Notebook,%20Ultrabook&Step2=Aspire&Step3=Aspire%20V5-471&OS=8cn1&LC=en&BC=Acer&SC=PA_4

===========================
Updated on Aug 21st
===========================
Since nobody would help, which is pretty sad, I dig lots of posts and articles and manage to mod this BIOS by myself. Basically, this Bios shares the same structure with V5-471PG, V5-471G, even other V5 series like V5-571.
The work is still under progressing and I am not sure if I can get it done. Here I changed this topic into a discuss topic and kindly ask for some help. Hope there would be someone would come and work it out.

Here is what I have got now.

Accroding to (UEFI) Dell XPS 15/15z L502x/L511z BIOS MOD HOWTO

1.This is a Phoenix SecureCore Tiano BIOS, same structure with Dell UEFI Bios but not exactly the same.
2.Bios can be extracted with phoenixtool V2.14.
3.There is a "EFI IFR SUPPRESS IF" code in the PlatformHiiAdvancedDxe.efi(CFEF94C4-***.efi) and SystemSetupMainDxe.efi(76016A54-***.efi). But all the pattern 0A 82 45 8A (**) is set as 0A 82 45 8A (01) already. So basically, the advanced menu is not suppressed, at least not in this part.
I tried to find this pattern in all the files extracted from Bios and did not find any luck.
4.Native speed steep can be enabled in PowerManagement2.efi (F7731B4C-***.efi)
Change (75) 08 0F BA E8 0F to (EB) 08 0F BA E8 0F (to enable native speed steep)

What is next
Find out where Acer blocked the advanced Menu.

Other options
1.Access Bios options through EFI shell, provied by [HOWTO] access you BIOS settings through EFI shell.
This is a way to access options in Insyde. However, I could not find the map for my Bios and the EFIshell not working on my laptop.
2.Unlock the Video Memory statement.
Since I only require to mod the video memory which showed in Main Menu, and the block looks like a Locked selector. According to the define of EFI_IFR_LOCKED, we may try to disable this statement and access the selector. However, i am not able to find the hex pattern of this part. I would be appreciated if anyone would verify this idea or help me find this pattern.

Sorry about my English
find
quote
#2
If there is anyone would like to take part in this Bios, please let me know.
find
quote
#3
(08-21-2013, 03:51 PM)asxzy Wrote: If there is anyone would like to take part in this Bios, please let me know.

I have tried a lot of things but I am unable to update the bios to a newer version.
I have a weird bug that let's my V5-471g boot up after a shutdown action, it happens after about 8 seconds of being off.

Thought it might be a Linux issue, but it also happens in Windows and I am unable to update bios 1.22 to any 2.x version.

It is a phoenix bios, so the regular insyde bios tricks do not apply.
This issue might be caused by my replacement screen somehow, I have no clue why else it would happen.

If anyone has a 1.22 bios with unlocked options or a working v2 bios, I am happy Smile.
Links to 1.22 bios: http://global-download.acer.com/GDFiles/...4703068370&Step1=ULTRA-THIN&Step2=ASPIRE&Step3=ASPIRE%20V5-471G&OS=ALL&LC=en&BC=ACER&SC=PA_6
and
2.18:
http://global-download.acer.com/GDFiles/...5124926448&Step1=ULTRA-THIN&Step2=ASPIRE&Step3=ASPIRE%20V5-471G&OS=ALL&LC=en&BC=ACER&SC=PA_6
find
quote
#4
Hello. I have a V5-571. And could try to help.
I have however, upgraded to last bios without a pro lem. Using the downloaded file from windows8.
(It installs something.. Then reboots and upgrade)
find
quote


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