how to downgrade a Asus Rampage II bios
Quote:
Originally Posted by
trt740
fellas how do you down grade your bios I would like to go back to 1504. My video card bugs out past 4.0ghz with 1639 and I need to down grade but cannot remember how.PCIE is at 100 in bios.
Quote:
Originally Posted by
Salamndar
No I'm on 1504 !
Quote:
Originally Posted by
trt740
I cannot use that procedure because I accidental copied the 1639 bios to both bios chips. I tried Afudos but the bios won't fit on a floppy and I tried using it with a usb drive that I made it bootable and it says bad file name when I type afudos /ibiosname
it appears that once I go over 4.0ghz the 1639 bios is over clocking my PCIE slot and effecting my video card. It tried setting the bus manually to 101 but it acts the same as the default 100. My screen goes crazy
Okay I figured it out, after you unzip the file for the flashing tool to down grade your bios, you must renamed it from AFU236U to AFUDOS and then loaded it on a bootable usb drive, or dos will not find it then you use the command
to flash the bios AFUDOS /iFILENAME.ROM . Then it works like a charm. If you have a 5770 video card it will malfunction bad with 1639 bios, but with the 1504 bios it works great.
here is a instructional thread to help you downgrade
http://vip.asus.com/forum/view.aspx?...Language=en-us
usb drive tool http://www.techpowerup.com/forums/at...7&d=1222699942
Here's the bootfiles I used
http://www.4shared.com/file/43544416...FILES.html?s=1 (Extract them, then make a folder called BOOTFILES, stick the extracted files into the folder)
Plug in the USB drive that you want to use.
Install and run HP USB Disk Storage Format Tool.
Select the USB Drive. In the "File system" drop down box, pick FAT32. Tick "Quick Format". Tick "Create a DOS startup disk, using DOS system files located at and click the "..." and direct it to the BOOTFILES folder you made.
Click start.