Hi all.

First of all, this is about recovering a bad flash, not modding, but I don't know where to put it.

I bricked an asus laptop flashing its bios. Flashing ended ok, shut down and now it doesn't boot, does nothing.
Stick says Asus model is A53S with MB K53SC. After dissassembling, I can see MB is K53SV, maybe it is why it got bricked.
I´ve bought a ch341 programmer to reflash it and have downloaded the latest bios from asus. I've done a backup of the actual bios too.
If I open the actual bios in fd44editor this is what it shows:


If I open the bios file downloaded from asus website:


I know I have to fill S/N. UUID and mac from stickers, but ¿what about me? Bios file from asus hasn't got ME.
Bios is MX25L3206E chip wich is 4 MB long. Bios downloaded from Asus is only 2,5 MB, suppose the 1,5 left is for ME.

How can I flash a correct bios?

Thanks.

EDIT by Fernando: Thread title specified to get help from any of the BIOS Gurus.

Hi, I've downloaded both K53SC and K53SV bios image from the Asus site and they have not the ME region inside them,
so I suppose they are simply bios with updated area and they can't be flashed as they are using the eeprom programmer,
due to the lack of the ME region.
The best thing you can do is to use Flash Image Tool (Intel) under Command Promt to see if your laptop motherboard
have descriptors unlocked, then use the same FIT for Windows, exporting the ME region from the backupped bios file
and inserting into the new one, mapping also the relative settings, compile it and flash the whole eeprom with your
programmer and see if it works.

It's a boring procedure, but I have no other ideas in my mind.

@Sylar76:
Thank you for your help.
I'm going to try to do it. ¿Is there any guide for inserting the ME region and mapping and compiling?

Thanks.

EDIT by Fernando: Unneeded fully quoted post replaced by direct addressed top line (to save space)

@PsyduckAP

You can try to read this user guide.

http://composter.com.ua/documents/System...ment_Engine.pdf

But download links for the stuff you need are currently disabled on this site.

Zitat von Sylar76 im Beitrag #5

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@PsyduckAP

You can try to read this user guide.

http://composter.com.ua/documents/System...ment_Engine.pdf

But download links for the stuff you need are currently disabled on this site.

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Zitat von Sylar76 im Beitrag #2

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The best thing you can do is to use Flash Image Tool (Intel) under Command Promt to see if your laptop motherboard
have descriptors unlocked

---

Zitat von Sylar76 im Beitrag #2

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then use the same FIT for Windows, exporting the ME region from the backupped bios file

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Zitat von Sylar76 im Beitrag #2

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and inserting into the new one, mapping also the relative settings, compile it and flash the whole eeprom with your
programmer and see if it works.

---

Thank you @plutomaniac

I don't know how to check if the bios file has only bios or bios + ec. I've opened it with UEFITool but don't know what to look for.
When opening the bios dump and the bios file with UEFITool, I've seen there is something left in BIOS region of chip dump (highlighted in images), last padding in dump instead third section in bios update.

The dump from bios


The bios 320


The rest looks the same (with the data from 221)

Zitat von plutomaniac im Beitrag #7

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I suggest you take that dump and replace only the BIOS/EC region with a configured one (FD44) from ASUS website.

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I'll try to assemble a stable bios for flashing it.

I only need few hours and I'll keep you updated later. Now I'm working for something else, sorry.

Edit : Bios Assembled.

https://drive.google.com/file/d/0By28-1Y...iew?usp=sharing

@PsyduckAP

Take the bios linked above. I've checked that your programmer dump is corrupted. ME region size is not correct.

Try to program eeprom with mine and tell me if it works. I've used the K53SVAS.320 bios file.

I'm going to flash it and will tell you if it works.

Thank you very much

Zitat von PsyduckAP im Beitrag #11

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I'm going to flash it and will tell you if it works.

Thank you very much

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I've put mac address, UUID and S/N with FD44editor.
Unfortunately I've broken the clip I use for programming. Tomorrow will fix it and will flash the bios.

Regards

Zitat von PsyduckAP im Beitrag #13

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I've put mac address, UUID and S/N with FD44editor.
Unfortunately I've broken the clip I use for programming. Tomorrow will fix it and will flash the bios.

Regards

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Well, busy weekend with the programmer.

Fixed the clip and flashed your bios and it works!!!! Thank you @Sylar76!!

(My english isn't good so maybe next explanation is not very clear)
Laptop booted but there were some problems in device manager. Couldn't initialize both graphics cards and the network card.
It was my fault. When bricked the laptop, I thought it was because I used a wrong bios.
My laptop is a K53SC but motherboard is K53SV. I flashed it with a bios for K53SC and bricked the laptop. When I saw the motherboard, I thought I should have used the bios for the K53SV. But the problem was the bios from K53SC was not written correctly.
I asked for help and I said the correct one was the K53SV and you helped me fixing the bios.
Now I realized the correct one is the K53SC and I've tried to flash the bios downloaded from asus with ASUS Easy Flash (no way, model name doesn't match) and with FTK (some differents problems depending on the version)
I didn't want to bother you asking for another bios fix, so I have tried to do it.

I've opened your bios file with fitc and replaced BIOS Region.bin with the bios file downloaded from asus for the K53SC and built it.
Later changed mac address, S/N and UUID with FD44Editor and programmed the chip. Now both graphic cards are ok, but network card can't initiate. Maybe it's because I put a mac address like AA:11:22:33...

Is this process correct or will have a lot of problems?

Regards.