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I have backuped two bin files with CH431a programmer, and posted it, one is frome BIOS the other one is 1mb from EEPROM (I think is caled that) and it's in rar file uploaded
hi sorry to reply on such an old topic! do u still remeber which chip did u backup using ur ch431a? something like: winbond 25q80bvsig?
i have an x380 too with locked bios so i am trying to unlock it rn
... Requests for password removal or BIOS repair for which the method is available at BIOS guides, methods, resources and tools will not be tolerated anymore if you do not explain why you did not succeed. ...
3. Password removal by laptop brand ... 3.7.2. DXE password bypass driver injection (2012-2018)
For newer machines (2012-2018, 4th to 8th gen Intel), the password itself is stored in the EC. BIOS must be modified and re-flashed to insert a special driver that will allow bypassing the BIOS password.
Refer to https://www.badcaps.net/forum/showthread.php?t=87588 and https://www.badcaps.net/forum/showthread.php?t=81573 ...
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Re: Please help with unlocking BIOS password from bin file Lenovo X380
Hi . Finally I have CH431A.
I have a X380 yoga mainboard (DTZS1 LA-F421P). I don't know if it is password locked. It starts, nothing in display and then it sounds a melody. (According to the Lenovo acoustic identification app, the error is: 0285: TCG-compliant functionality-related error (might be the TPM initialization failure), I have seen it is frequently related to bios upgrade problems
)
I have followed the procedure of patching the bios.
Surprisingly, mainboard works with patched bios, no melody, lenovo logo appears and I have followed the procedure:
...
STEP 6: Press space bar 2x when asked
STEP 7: Turn off machine
STEP 8: Restore original BIOS
But, after i restored the original bios, again nothing in display and a melody.
What can I do? Is the original bios corrupt? If so, why does the patching work? can I download a standard one, where can I get it? And what about the CRC?
It works!!! I have tried Linux and Windows 10 and apparently everything works.
However, something annoying happens. The laptop takes 30 seconds, with a black screen, until it starts to boot and the Lenovo logo appears on screen. It also takes a long time to resume from suspend.
I have checked the model in the BIOS, 20LJ-S34P0Y. The same is on the sticker in laptop cover. So that shouldn't reflect the installed bios.
Have I downloaded maybe a bios from another model? What else could be happening?
Re: Please help with unlocking BIOS password from bin file Lenovo X380
update 2:
I have been trying upgrading and downgrading several bios versions through lenovo repository for X380 yoga. I have reset the bios to default, I have tried changing many parameters (quick boot, lan boot,...), but the laptop still takes 30 seconds until the first Lenovo logo appears to access the bios. I have done all the diagnostic tests on the board and it passes fine. Also, when I suspend and resume in Windows or Linux, it takes 15 seconds to wake up.
---------------------------------------------------------------------------------------------------------------------------------------------------------- All donations to Badcaps are welcome. Become a Badcaps supporter >>>>>click on this link to donate <<<<< Thanks to all supporters.
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A doubt. Is it required to flash it again with CH431A or would there a way to do it via software?
Can you use FPTW64 -greset as I have read in another guide?
Flash using programmer.
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