ASUS laptop bios - update went bad

[consumer48]

Hello,

I'm having some problems with an ASUS R700V. While trying to update the HDD to an SSD, the system wouldn't always recognize the SSD. I checked for SATA and AHCI in the BIOS, but there were few options regarding SATA config. I then decided to update the BIOS (like the last time I've had similar issues with another mobo, and succeeded).
After downloading the last BIOS from the ASUS website, I went on with trying to update it. All went well, the flash tool verified the image, erased the previous BIOS, and started writing the new one, UNTIL it reached 100%. At 100% it gave me a 'ROM Update not Success' - Verify Error.
What's awesome is that the first step of the update process was the verification step, and it said it was ok.
So... after rebooting the laptop, to my surprise, it entered bios, and I said to myself, 'good, it hasn't updated it, it's not bricked', but upon checking the BIOS version, it actually was updated.
And the update offered SATA configurations, but guess what? The BIOS is corrupted, and now it won't boot from any HDD.. the EFI option dissapears when I set it to enabled!

So.. yeah.. the laptop is semi-bricked, I can't install any OS on it, and ASUS support ..well... supports nothing. Their solution was 'try using it with the old HDD'.

I've already tried re-flashing it with previous or the same version, and it won't do it, saying that the version is too old.

Has anyone managed to recover from a corrupt bios update?
Does anyone know of a way of tricking the system into 'thinking' that version x.1 is actually version x.2? I'd be happy with bringing it back to the previous condition.
I have to mention that even if the mobo dvd would have had a bios recovery on it, I don't have the dvd.. maybe I can download something similar from somewhere, but I haven't found anything.

Any help would be appreciated.
Thank you.

 

[Sohom]

Always do a bios update in an orderly fashion for stability like if bios update 1 and 2 are available, then first update using 1 and then 2.
Anyways, try and see if you can downgrade the bios version to the one it was before. And i dont think the bios is corrupted because then you wouldn't had been able to boot into it.

 

[consumer48]

Always do a bios update in an orderly fashion for stability like if bios update 1 and 2 are available, then first update using 1 and then 2.
Anyways, try and see if you can downgrade the bios version to the one it was before. And i dont think the bios is corrupted because then you wouldn't had been able to boot into it.

The laptop had version 208 on it (first released version), and the version I used to update it was 234, with about 15 version is between. I've never had any problems when updating from an initial version to a version released after five years, directly. This is the first time I've had this problem, and I've done a lot of 'em.
Regarding the downgrade, this is exactly what I'm asking... has anyone managed to downgrade?

 

[Sohom]

Always do a bios update in an orderly fashion for stability like if bios update 1 and 2 are available, then first update using 1 and then 2.
Anyways, try and see if you can downgrade the bios version to the one it was before. And i dont think the bios is corrupted because then you wouldn't had been able to boot into it.

The laptop had version 208 on it (first released version), and the version I used to update it was 234, with about 15 version is between. I've never had any problems when updating from an initial version to a version released after five years, directly. This is the first time I've had this problem, and I've done a lot of 'em.
Regarding the downgrade, this is exactly what I'm asking... has anyone managed to downgrade?

Ok, so there lies the problem; in the past you may have been lucky like if the last latest bios update is a major update, then directly upgrading doesnt affect it, but if there was a major update in between regarding the microcodes and then a minor update was released, then it causes errors.
You can still downgrade the bios but depends; if a major change to microcode was done in the latest bios update, then you cant go back. Most of the times, it will be mentioned on Asus bios download site that whether you can downgrade after updating to a certain bios version.