Acer Aspire 5738 Restore full ram speed

[IrRaziel]

Hello. My Acer Aspire 5738 (chipset Intel GM45) originally had bios version 1.18. With it the installed PC2-6400 DDR2 runs at full speed of 800 MHz.

I updated the bios with last version 1.34 and now my PC2-6400 runs only at 667 MHz.
I tried the versions 1.34 1.28 and 1.25 (the only I found on line) and also the unlocked version of 1.34 and 1.28 founded here.
I tried also with an other brand of ram but it runs only at 667 Mhz

I searched online for hours, I didn't find anywhere below version 1.25
I think it's only an Acer marketing move because GM45 supports DDR2 at 800 MHz (as with bios 1.18)...

So I would ask if it is possible please to mod the original version 1.28 (I don't like 1.34) in order to get ram at full speed of 800 MHz

I ask please only this modify. Thank you very much

[DeathBringer]

Make, zip and attach TXT report of CPU-Z.

[IrRaziel]

Done!
At the moment it has the bios 1.25 because I'm making some other (useless) tries...

Thank you very much

[DeathBringer]

Update to actual version.
Go to BIOS and do Load Defaults, save and reboot.
Make new TXT report of CPU-Z.

[IrRaziel]

I flashed the version 1.28 (which I requested).
Loaded setup defaults

Attached a new zipped cpu-z report

[DeathBringer]

Try to flash old version - https://www.driverguide.com/driver/detai...id=1522185

[IrRaziel]

I already downloaded it, but I didn't flash it because probably it has not Intel T9400 microcode.
However I will try to flash it now.

[DeathBringer]

And try modded 1.19 - http://www.mediafire.com/?77u7ihhszz2fjsu

[IrRaziel]

I  flashed the 1.06 version and loaded setup defaults. Intel T9400 seems to be correctly recognised and ram now runs at full speed 800 MHz.
I attach cpu-z report.

However this version is a bit too old and not optimized, so I requestd the little modify to the 1.28 version. If it is an hard work I leave this 1.06.

Thank you

[IrRaziel]

Wow, thanks! I now try the modded 1.19 . If it works it's perfect in this way