Page 1 of 1

Uniflash and Bootblock Mismatch warning

Posted: Sun Feb 02, 2003 6:10 pm
by Denniss
If using Uniflash to flash a mainboard's Bios you might get a "Bootblock Mismatch" error message with the option to continue flashing or not
Do not continue flashing !!
> It may render your Bios useless or (with luck)the board starts with emergency Bios (Bootblock Bios)

Make sure you have the correct Bios !

If you get this "Bootblock Mismatch" error message do not continue flashing - go to Uniflash Advanced menu and use the option Flash including bootblock - if the message comes again press Y and continue ( Bootblock and main Bios are updated)

Posted: Mon Feb 03, 2003 1:41 am
by ajzchips
Very true. I always ended up with a dead board when I got that warning and proceeded anyhow. I believe Rainbow mentioned he was going to do something about this issue.

Posted: Mon Feb 03, 2003 3:52 pm
by Rainbow
v1.30 will include another question if there's mismatch - if you answer Y that you want to flash, it will ask you if you want to flash including bootblock, Y is recommended.
v1.3 will also show the progress bar in green or red. Green when block was flashed OK, red when there was an error (such as timeout).

Posted: Fri Jul 18, 2003 2:34 pm
by Denniss
Uniflash has now reached version 1.32

Available on the new Website

Posted: Fri Jul 18, 2003 4:00 pm
by KachiWachi
You may move this to it's own thread if appropriate...

Suppose you get this error, flash the bootblock, but in reality you've chosen the wrong file to flash to begin with. I would guess not all bootblocks are the same. Wouldn't that still render your board useless??

Posted: Fri Sep 10, 2004 9:11 pm
by ruelnov
Very true, and I have learned from this experience.

And to make sure that I'm flashing the correct BIOS file or correct BIOS update, I first save the existing ROM binary file, then compare it with the new file to be flashed based on the following parameters:
1. BIOS ID String (without the release date),
2. Chipset Register Defaults,
3. IRQ Routing Table,
4. ACPI Table

These parameters don't change as new BIOS updates are being released by the manufacturer for the same board.

Wouldn't it be great if Rainbow could include this "auto-compare feature" in future versions of Uniflash?

Posted: Fri Sep 10, 2004 10:09 pm
by Rainbow
Functionality like "auto-compare" will NOT be implemented. UniFlash should be universal - it does not check what's inside the file you are flashing - it only checks the size, which must always be equal to the size of the chip.
BTW.: Starting with v1.33, flashing is done including bootblock by default.

Posted: Mon Jul 04, 2005 1:26 pm
by geni01
HI, I just try to use Uniflash to flash my mobo P4c800-E deluxe, and this message comes up :

Flash Data Verification Error
Retry Write Operation [Y/n]

When I try it again, it's always comes up with this error message.

Help pleaseeeee :cry: :cry: :cry:

get to hat flash

Posted: Sat Dec 24, 2005 12:40 am
by franka2
you may run into this prob if u picked up a mobo from inferior manufacturer ... ;)

the smartest guys have ELITEGROUP featuring TOP HAT FLASH

a socket to flip over soldered on PLCC / bad bootblock no problem whatsoever!

check out for youself - it's pretty much a failproof concept "by design"...