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[$50 reward] Applying changes in AMI Aptio ROM
#1
Hello,

My laptop has an Ami Aptio bios.

Today I unsoldered my bios eeproms (W25Q32BV and W25Q32BV), and dumped the contents of those chips to two files.
Goal is to enable booting from ODD Caddy, and unhide more features.

AmiBCP (v4.55) can open the biggest file, but I only see the BOS Features tab. It tells that the bios tag is
1AQPM030 and also that toshiba is the vendor.

However, I succeeded to extract the setup module using uefitool and with Universal IFR extractor I can see this:
Code:
0x5C535         Suppress If: {0A 82}
0x5C537             Variable 0x1C equals 0x5A {12 06 1C 00 5A 00}
0x5C53D             Setting: SATA ODD Interface, Variable: 0x402 {05 A6 E3 09 E4 09 11 00 01 00 02 04 10 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
0x5C563                 Option: Lock, Value: 0x1 {09 0E DD 09 00 00 01 00 00 00 00 00 00 00}
0x5C571                 Option: UnLock, Value: 0x0 {09 0E DE 09 30 00 00 00 00 00 00 00 00 00}
0x5C57F             End of Options {29

Quite interesting! So, my question is, how to make this option visible, or how can I change the default value. I can find the options (09 0E DD 09 00 00 [01/00]) back in the hex editor.

All guides tell me to do this using AmiBCP but thats not working out. I also tried to concatenate both files, but result is the same (info tab only).


Attached Files
.zip   rom files.zip (Size: 11.27 MB / Downloads: 2)
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