Bios update Checksum

June 23, 2009 at 11:23:24
Specs: WinXP Pro, E6850 3.0 / 4gig DRR2

Im trying to update my bios (ok i know i shouldnt if i dont experience any problems buttttt i just wana try)

i have a GA-P35C-DS3R Rev 1.1

I extract my Bios files which i downloaded 5 times from Gigabyte website, and place them on a memory stick (FAT32). i then reboot, enter Qflash.

when i navigate to my USB memory stick, it finds my BIOS file F12 (also tried F10) - it does a check and comes back with

for F12 - 'Checksum 5A00'
for F10 - 'Checksum C500'

any ideas what these mean?

it allows me to continue but im assuming i shouldnt.

i have a feeling i may need to reset my CMOS?

Any thoughts would be much appreciated.


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June 23, 2009 at 12:00:22
1st of all, why did you download the BIOS file 5 times? And why are you flashing from a memory stick? Do you not have a floppy drive? If not, why not?

Did you read the Q-Flash instructions?

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June 23, 2009 at 12:25:58
When all else fails read the instructions.

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June 23, 2009 at 12:26:01

we should stop meeting like this :)

your download of ga-P35c-ds3r_f12 self extracts on a double click giving you a autoexec.bat file the bin file and the flash prog , Flashspi.exe

what i did
i created a xp boot disk floppy, added the 3 files
and changed the pc boot order so the floppy is first
then invoked the .bat file. (which i had renamed prior to booting as flashme.bat so not to over write the boot autoexec.bat file created on the boot disk.

this is the sure fire way ive found to flash giga byte mobos
from my pm, ive seen what q flash does :( or doesnt sometimes, it should work flawlessly but i err on the side of caution now.

so im not going to recomend qflash , the error code is possibly a duff download or issue with the bios bin file.
Your usb is fat32 ?
ive also used the @bios utility worked great the first time lost the bios the second so ... i had kittens when that happened
fortunately my mobo has dual bios ones an emergency , that was lucky, not sure about your mobo so id use the floppy disk method.
use a new clean antivirused boot floppy.
Finally double check you got the right bios, check it really is rev1 , not like i did flash a rev 1 with rev 2 bios , its stamped on your mobo , mine was well hidden on the edge, hate gigabyte for that as it wasnt on any documentation and the rev 2 had only just came out. yours has 3 versions.


btw win 7 great on 4 gig ram having used it a bit ive actually gone back to xp no other reason than 'it works' win7 hung on chess and media playerdownloads to much updating the mp3 with thumbnail pics , and the disk is always quietly thrashing in xp it doesnt do that. i'll wait for the full version.

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June 23, 2009 at 13:34:01

You the man, if you lived in the UK i'd buy you a drink or 10 for all the help you have always given me!!!!!! :-)

So i read the guide, it was awesome, i updated my bios in increments i went from F2 to F4, F4 to F7, F7 to F10 and then to F12, it worked first time and flawlessly....!!!

Thanks so so much for that guide, without that, dude, i think i would have messed my machine up.. when i say i downloaded it 5 times i meant i was checking to see if the checksum error appeared on every download, btw it did come up each time i updated but i was still able to successfully update the bios.

Ok so iv updated, but now my M.I.T section of Bios has a few new options in there and i am not sure what to do to optimize them, can you possibly check to see if my attempts are correct please?

the page was too big so had to take twp pics...

very true mate, but sometimes we all tend to jump too far ahead, luckily i was able to control myself from pressing the enter button at "are you sure you want to update?" and was able to ask the question...PHEW!

hey 1stepbeyound,
glad it all worked out for you on your system, bios update is one thing i have NEVER attempted (was too scared) but when you done your one, i was inspired :-). Thanks for the help and advice mate appreciate it all.


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