Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

[Bugeur]

Hi everybody,

I looking for password of my tablet Mercedes Benz, because I can't install the update of the update.

I have EC_133WK.bin and BIOS_M133KW_Corporate.bin files.

I did update the bios via windows with the EC_133WK.bin file but still same, the password is there. (U92 GD 25Q20CT)

I unsoldered the chip U89 (U89 WINBOND 25Q256JVEQ), erase and write file BIOS_M133KW_Corporate.bin with CH341A. But still same.

I already dumped all chip around.

There is a 25L8006E chip (U65 25L8006GE M2I-12G 5E395700) I have just dumped. Someone told me password should there.

I let you pictures of my motherboard. And link to the files I got and dumped.

is there a way to find password from these files (I guess into the 1 mb file)

Thanking in advance.

Best regards.

U51_U65_U89_U92_BiosFiles.rar (7.95 MB)

https://www.badcaps.net/forum/attach...1&d=1680709446

[SMDFlea]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

I let you pictures of my motherboard. And link to the files I got and dumped.

You must attach files directly to your post instead of linking to external websites

https://www.badcaps.net/forum/showthread.php?t=103570

.

[Bugeur]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

You must attach files directly to your post instead of linking to external websites

https://www.badcaps.net/forum/showthread.php?t=103570

.

I correct my mistake. Everything is good, now.

[Bugeur]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

Anyone can help on this matter ?

Best regards

[AAAC]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

@Bugeur
I've spent quite some time checking your BIOS file, I have 2 passwords to try, please try each and provide feedback as to which of them worked (password found is case sensitive, but may not make a difference according to other findings):

password1 = mMc3!AaW=s
( mike, MIKE, charlie, digit[3], ExclamationMark[!], ALFA, alfa, WHISKY, EqualSign[=], sierra)

password2 = Mm3cA!Was=
( MIKE, mike, digit[3], charlie, ALFA, ExclamationMark[!], WHISKY, alfa, sierra, EqualSign[=] )

[Bugeur]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

Hi,

Thanks for your kind support. I really appreciate it.

I did get intouch with Winmate support and they did finally give me the password which was :

Mm3cA!Was=


So the second one you gave me.

But, could you please tell us on which chip was it ? And the way to find out it. It's very strange.

Moreover, once I did put the password, I noticed I cannot totally remove it.
How comes ? is there a way to flash with bios no passworded ? or any other way ?

Thanks in advance.

Best regards

[AAAC]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

Hi,
thanks for the feedback. It took me quite some time as I did check all the other files and finally checked every variable/driver name/contents of the BIOS file. The password is hard-coded into one of the BIOS DXE drivers, that's why you cannot remove it. It's a tiny DXE driver with 1,662-byte size, one option is to delete this file and save the new BIOS, update chip and then check, but you may not be able to set a password at all, or the other option is to set your own password into this dxe driver file and update the BIOS file with changes.

You are looking for this:
Name: "DefaultPasswordDxe"
UUID: 09802933-8BA2-4789-A744-3B3500576E49

Would like to see a picture of the password prompt, as this driver is a little different from what I've seen, couldn't fine any reference to it from other parts of the code making the CALL.

Best regards

[Bugeur]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

Hi,

Here is the password prompt on the picture.

Whatever I did choose (except Continue) I got Password prompt.

-----------
Where would I find information about :

"Name: "DefaultPasswordDxe"
UUID: 09802933-8BA2-4789-A744-3B3500576E49"

From bios files ?

Best regards

[AAAC]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

Use UEFITOOL NE version and open BIOS file, then do a search for the GUID or the variable name as Unicode.
If you want to edit the BIOS then use the regular UEFITOOL, you may delete the DXE driver module or you may extract it, edit the file and then update the BIOS with the edited DXE driver.

[Bugeur]

Re: Winmate M133WK - Xentry Diagnosis Pad 2 BIOS Locked

I'm going to try it maybe this week-end. Thanks for te knowledge sharing.