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[REQUEST] Sony VGN-SR31M memory initialization code
#1
I have an old Sony laptop - VGN-SR31M, P8600, Intel PM45 chipset-rev.07, ICH9-M-rev03, ATI 3400.
It's a really good built with nice screen, so I decided to upgrade it to run a bit faster and give to my daughter as her first laptop.
I manage to upgrade hard disk to SSD with some hiccups (had to change GPT to MBR), but at the end it's working. The real problem become the memory upgrade.
The laptop is equipped with 2x2 GB PC2-6400 memory sticks. I ordered and replaced the sticks with 2x4 GB PC2-6400.
The laptop boots but running extremely slow. The memory is shown in CPU-Z, but the screen is constantly flickering.
My best guess is the memory timings are not right.
The AMI BIOS is really old and most of the settings locked - R2080Y1 from 2009. For some reason Sony decided to flash it with Insyde flsh tool.
I've checked the available option in AMIBCP but there is no advanced memory settings menu items. Just memory information.
So I didn't try to unlock the hidden menu items as I not that expirienced and I can't see any benefit from it.
The only advise I got is that memory initialization code have to be changed.
Can someone help me with this issue?


Attached Files
.rom   sony_org.ROM (Size: 2 MB / Downloads: 0)
find
quote
#2
I found other Sony laptop bios images with the same chipset. Replacing cantigamemoryinit is successful and bios is booting.
The bad thing is all this images are from 2009 and apparently don't contain the needed memory configuration.
I found some newer Sony bios's for Sony America, but they are packed with different installer and I can't uncompress the files.

If someone can provide an AMI laptop bios with cantigamemoryinit (PM45 and DDR2) from 2010 onward it will be highly appreciated.
Does somebody knows how to unpack/edit the memory init?
find
quote


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