Microsoft Surface Pro 7 NEED BIOS. HELP!

[AAAC]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

@Sakaan
I may know where your problem is by looking at pictures.

I've had a few programmers, PIN-1 on programmer ZIF socket is the one closest to LEVER, but in CH341A programmer there are some variants for PIN1 location depending on the chip you want to program (24Cxx eeprom or 25xx spi chip). When you want to program an SPI chip, PIN1 is located 4 rows below (on pin5), and have also seen PIN1 is located on the opposite corner from where the chip release lever is located.
You already have this part working...

The problem seems to be located in 1.8V adapter, the PIN1 is the one located closest to chip release lever, so just relocate adapter with ribbon cable four rows of pins above (next to lever).
Take a look at this picture:




The CH341A programmer with 1.8V adapter and the ribbon cable attached with SOP8 clip must look like this setup:




I've taken the pictures from this other forum post (a very nice guide to CH341A programmer):
https://winraid.level1techs.com/t/gu...rammer/32948/3

[Sakaan]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Thank you so much. I am away for from home for couple of weeks. Will try once back home.

[roflcopterwtfhax]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

I'm having a similar issue, can't seem to get any programs to detect the 25R128JWPQ (W25R128JW?) correctly. I have a CH341a programmer with the 3.3v to 1.8v adapter, pins in the right spot, yet every program I've tried to use gives me garbage/random data whenever I try to read the chip.

Makes you wonder how the OP managed to read the data correctly.

[hamid_seta]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

try..

Hi
This file working fine I have tested and it does boot perfect without any password.

Thank you

[miha0095]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Hi
This file working fine I have tested and it does boot perfect without any password.

Thank you

Which programmer are you using?

[clrscr]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

helo every body!
my laptop surface pro7 has "computrace", please help me remove
thank you so much!

[magneh]

Microsoft Surface Pro 7 1866 BIOS request

Hello

Got a 1866 that turns on, windows logo, and off.

Would like to reprogram bios.

Anyone has a clean dump for this device?

Appreciate it.

Cheers!

[SMDFlea]

Re: Microsoft Surface Pro 7 1866 BIOS request

Anyone has a clean dump for this device?

post your backup

[magneh]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Heres the original dump

Bios IC

Winbond 25R128JW

Ive read the IC with my programmer, like a donk, without seeing the IC is 1.8V
its the file bkp.zip

Then I used a 1.8V adapter to read it, and I got different content on the bios file.
its the original.zip file

Did I screwed this up?
Always learning...

[magneh]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

So yeah, I think I screwed up.

Flashed the dump of Peste post #8
Same thing.
logo comes up and goes away, just as before.

Poked around with multimeter, and found a shorted rail.
Tried my luck without screen connected and with thermal cam, found a cap heating up. removed it, and it was indeed shorted!
And guess what, surface turns on, and I got BIOS screen with Peste dump.

Now, I would like to keep the serial number and original dump.
Flashed both dumps I posted here, none of them work

Can someone help me inserting SN on Peste's working dump?
Or fix one of these files I uploaded?
SN of the device is 041644201153

Also, to replace this cap I must get the exact same one with same print?

NEh
jE8

Thanks for all the help!

[magneh]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

So yeah, I think I screwed up.

Anyone?
Would love to keep a proper bios
Cheers

[SMDFlea]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Anyone?
Would love to keep a proper bios
Cheers

try this one.

[magneh]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

try this one.

Thanks for the reply SMDFlea!

Still not working, Device turns on , surface logo for 30 secs, goes off, and same thing again in a loop. nothing else happens

Also, with @peste Dump, touch does not work. I have Touch firmware 0.0.0.0 in UEFI screen (check 2nd photo on post #30).

What I cant understand is why the backups ive done neither work...very weird never had this problem before.

If someone could help with this issue, would be much appreciated !

[magneh]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Any bios expert with some minutes on the weekend to help me with this one?
Cheers!

[hoaca388]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Any bios expert with some minutes on the weekend to help me with this one?
Cheers!

Try

[magneh]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Try

Thanks Hoaca.

just tried it, device does the same as with my backups, surface logo for 3-4secs and goes off.
If I press power button again, same thing

[hoaca388]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Thanks Hoaca.

just tried it, device does the same as with my backups, surface logo for 3-4secs and goes off.
If I press power button again, same thing

Try deleting ME that file and then flashing it again, if that fails check your hardware again. Maybe something was left behind.

[magneh]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Try deleting ME that file and then flashing it again, if that fails check your hardware again. Maybe something was left behind.

Well if I flash Peste bios, it works as you can see in the pics
just no touch and serial is wrong

You mean clean me your file?

Not very bios savvy lol

appreciate it

[magneh]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

Sorry to ask again, but can someone more experienced build a working bios for this device?

Thank you!

[AAAC]

Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

@magneh
I've taken PESTE bios (post #8) and complemented it with your bios (bkp.zip, post #29), invalidated "SetOEMStrings" UEFI variable... but seen other Dfcixxxx UEFI variables too.
If this bios works it will be your starting point, then you can take care of the MDM/DFCI.