Anyone know how to extract a Dell bios from the ****.exe?? How to modify the ROM?

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I have flashed my Inspiron 530 twice with modded bios made with Andy'ps Award tool i made a bootable usb thumbdrive copied the modded bios file called 713D1P53.bin along with awdflash.exe i just made up a bat file called dosflash.bat and added the line.

Code:

@ECHO OFF
awdflash.exe 713D1P53.bin /py/sn/cc

then just boot with usb and run the dosflash.bat wait for it to finnish it will tell you to reboot machine when done. you will then need to gointo bios setup and load bios defaults rember to disable floppy drive if you dont have one then save your bios settings and exit.

 

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It won't flash, checksum incorrect.
You've done everything Ok, but don't touch the last bytes in the file.

Look, when you've corrected the control 4 bytes at 100054, the checksum of the whole rom block and these 4 bytes became ffffffff (as it was in the original).
And there no need to correct the control bytes of the whole file (the very last bytes), because the checksum of the whole file remains ffffffff (as it was in the original).

No. You'll be the first hero (Joke. Don't flash it, it's HIGHLY EXPERIMENTAL)

 

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No.
Do you need to taste salt to say that it's salty?
Check crc32 of the original .hdr and the crc32 of the .hdr file you've made.

And don't offend, please. I just want to help.

 

if someone wants to try modding the xps M1330 that contains slic 2.0 M08 to slic 2.1 M09, i have a xps M1330, i can try flashing the modded bios to slic 2.1
my laptop got 4 years garantee so if the mobo doesnt work anymore, i'll call a technician to change it, they react very fast, i'll get a new mobo the day after my call, but be sure to know what u do
i used winhex to open the m1330 rom and checked for M08 but when i look at the M09 slic, it begins by : SLICv, and i don't find this into the actual M1330 bios, and i dont really know what to do to change the M08 slic by the M09 one.
maybe someone can help me to make the change but if i succesfully mod the rom, then how to inject the rom into the dell exe ?

 

Very sorry, please I apologise. Yes I was wrong, I did not mean to offend, really your work here is great and I really appreciate it

 

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I mean don't feel offended .
Well, look at the structure of the .hdr file.
It contains some data blocks and four control bytes after this data.
The control bytes have such values that the crc32 of the data and these bytes is ffffffff.
At the end of the file you can find four control bytes of the whole file.
It's common practice, I've seen it in Motorola files.
You can check the whole file and if the crc32 is not ffffffff, you can quickly find the block with mistake.

So when you correct the control bytes of the rom block, there's no need to touch bytes at the end of the file.

 

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ailef, waiting for news from you ...

 

ok, i got the .hdr file, now i have to understand how to do with this file to flash my M1330...
i think i'll do that on monday morning if i get how to do it,
cause if it fails so i call them right after the flash to ask for a technician to change my mobo the next day, let's make a little pray

 

Ailef, as I know, Dell is not going to release BIOS update with slic 2.1 for XPS 1330/1530 so it's a pitty ..

 

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hé hé, the prob is that i don't know how to flash the modded hdr file.
i checked the hdr file and i see that it contains M09 instructions but i don't understand a lot of things.
i thought i have to mod the .rom file and not the .hdr
anyone can help ? i'm going to read into this thread better, but do i need some linux distro to flash or what method i should use, i really don't know, let me read, i'll tell you my results. if it doesnt work, i have another machine to tell you that it failed. i can't wait until monday, i want to know now if i can activate thiw windows 7 on my machine !

 

you don't flash the hdr file exactly, you flash the bios.gz file by placing it in the directory with the original exe flash from Dell on a dos boot disk, boot from dos and run command M1330A15 -readgzfile

 

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ok thank you for your help; i just realized that after reading more pages back on the thread.
i'm going to create a dos cd image and add the dell exe file + the gz file to flash, in case the flash fails, what are the ways possible to flash with a normal bios if the machine stays with a blackscreen ?