Lenovo ThinkPad T470 bios password decrypt

[wiltd]

Re: Lenovo ThinkPad T470 bios password decrypt

frphpaz, I don't know what I'm doing yet with the BIOS unlocking, but the guide says after you flash the patched rom/bin and remove the password you need to flash your original rom/bin back on. Did you do that?

Also, a drive won't show up if your laptop BIOS drive setting is set to use intel rapid storage technology (IRST)/optane you can't boot a generic windows build from microsoft without adding the IRST drivers to the boot and image wim files. Easiest to change to AHCI for your drive in the BIOS and try again. Or get an OS image from the original manufacturer if they offer it.

[wiltd]

Re: Lenovo ThinkPad T470 bios password decrypt

Thank you Markus1741 for pointing me in the correct direction. I followed those instructions for the autopatcher, his script needed some chmod'in and an alias in bashrc to make python in his scripts run as python3 but then I got it to spit out my file. A diff on my file to yours show a match! Thank you for helping me learn how to do this!

Next time my kid's home from college with that laptop we'll follow the rest of the steps and hopefully it goes well I'll try to remember to report on it then.

[frphpaz]

Re: Lenovo ThinkPad T470 bios password decrypt

Hello wonderful group, I need your wise advice, to start, thanks to you, I have finally managed to remove the administrator lock from my Lenovo T470 and it now allows me to modify the bios, now my problem is that when I connect the SSD m2 PCI NVME hard drive immediately The password lock appears, but when I turn on the PC without said hard drive there, it does let me enter the bios or execute USB boot, when I do the process to install the operating system, it does not recognize the hard drive, is there a way I can format and thus be able to install the operating system?

In an improvised way, using a mechanical external hard drive, I was able to install the operating system but only with that external hard drive installed. I would like your advice so I can use it in the normal way. I thank you very much for your attention and I hope for your help and suggestions to try to to be able to use my computer correctly.

[Markus1741]

Re: Lenovo ThinkPad T470 bios password decrypt

My son bought a T470 on ebay and it came Supervisor password locked in the bios. I pulled the bios and attached it, but I am totally lost on how to remove the password. Does anybody have the ability to fix the bios for me or step me like a newb through the process please?

Thanks!

Read this page ...

https://www.badcaps.net/forum/showpo...52&postcount=1

Or this YouTube video ...

https://www.youtube.com/watch?v=1ypCYSxbxyY

[Vesko356]

Re: Lenovo ThinkPad T470 bios password decrypt

My son bought a T470 on ebay and it came Supervisor password locked in the bios. I pulled the bios and attached it, but I am totally lost on how to remove the password. Does anybody have the ability to fix the bios for me or step me like a newb through the process please?

Thanks!

Read post #125 and the rules
RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103570

[wiltd]

Re: Lenovo ThinkPad T470 bios password decrypt

My son bought a T470 on ebay and it came Supervisor password locked in the bios. I pulled the bios and attached it, but I am totally lost on how to remove the password. Does anybody have the ability to fix the bios for me or step me like a newb through the process please?

Thanks!

[SMDFlea]

Re: Lenovo ThinkPad T470 bios password decrypt

plsss remove password t470

Read this,you can unlock it yourself - https://www.badcaps.net/forum/showthread.php?t=103570

.

[badola]

Re: Lenovo ThinkPad T470 bios password decrypt

plsss remove password t470

[ecolaptop]

Re: Lenovo ThinkPad T470 bios password decrypt

Hi. Thank you in advance.
I have 2 t470 identical once.
Both have supervisor password and now I cant set date and time etc.
One I was able to patch it with Lenovo patcher the other one
when bios file patched gets stuck on Lenovo start-up screen - give no output to keyboard internal or external and I can't do anything but when reflashes with original bios it starts to work like normal - still with password as i could not execute the patched bios.
I even tryed to load patched bios file from the one I succeeded with but still same behaviour.
Could anyone explain this to me and / or just remove the SP from attached dump please?
I really appreciate your time and effort in it - I'm just to stupid do manage on my own so have MERCY!
Thank you once again.
My best regards

OK so I'm stupid and I completely forgot the fact that to get in you need to press F1 as it boots up lolol. It is not like I do this first time but for some reason I just left it without pressing awaiting post screen lol. I'm stupid - good that nobody replied that would be awkward lol.
This worked 2nd time now so I thank you once again.

[ecolaptop]

Re: Lenovo ThinkPad T470 bios password decrypt

Hi. Thank you in advance.
I have 2 t470 identical once.
Both have supervisor password and now I cant set date and time etc.
One I was able to patch it with Lenovo patcher the other one
when bios file patched gets stuck on Lenovo start-up screen - give no output to keyboard internal or external and I can't do anything but when reflashes with original bios it starts to work like normal - still with password as i could not execute the patched bios.
I even tryed to load patched bios file from the one I succeeded with but still same behaviour.
Could anyone explain this to me and / or just remove the SP from attached dump please?
I really appreciate your time and effort in it - I'm just to stupid do manage on my own so have MERCY!
Thank you once again.
My best regards

[kordex35]

Re: Plz i need to clear bios password for lenovo thinkpad T470

Plz i need to clear bios password for lenovo thinkpad T470...thanks

ok

[ploggy]

Re: Lenovo ThinkPad T470 bios password decrypt

Read the rules before posting:
RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
You must attach files directly to your post instead of linking to external websites.

.

Apologies. I would remove the link but I cant edit the post for some reason ?

[Vesko356]

Re: Lenovo ThinkPad T470 bios password decrypt

Here is the bios dump
https://*****/t-93***O8cH

Read the rules before posting:
RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
You must attach files directly to your post instead of linking to external websites.

.

[ploggy]

Re: Lenovo ThinkPad T470 bios password decrypt

All good! once I figured out that the tamper switch needed to be untaped everything else fell into place, laptop back to fully functional condition! thanks everyone for the great work you do

[ploggy]

Re: Lenovo ThinkPad T470 bios password decrypt

Hi all
I have dumped my t470 Bios file multiple times with a CH341A using both Colibri and ASProgrammer tool but none of the dumps CRC's seem to match?
I made sure to disconnect both batteries plus the cmos battery and I've taped the tamper switch down also.

I can post one of the dumps if you want but I'm afraid they wont be vaild dumps?
Is it possible to derive the password just from a dump?

EDIT: Looks like I can get matching dumps if I remove the tape from the tamper switch :P

Here is the bios dump
https://*****/t-93***O8cH

[SMDFlea]

Re: Lenovo ThinkPad T470 bios password decrypt

PLZ Lenovo T470 Patch File PLZZZZZZZZZZZ

See post #101 and -> https://www.badcaps.net/forum/showthread.php?t=103570

.

[chandrakant]

Re: Lenovo ThinkPad T470 bios password decrypt

PLZ Lenovo T470 Patch File PLZZZZZZZZZZZ

[Ole82]

Re: Lenovo ThinkPad T470 bios password decrypt

Thanks A LOT!
Everything Working Great!

[Markus1741]

Re: Lenovo ThinkPad T470 bios password decrypt

Good day everyone and to the Bios unlocking knowing peoples.
I have want to asking for help with my T470 bios.
I have bios password on it.
Please help me to clear it.
Here is the dump:

Try ...

[hoaca388]

Re: Lenovo ThinkPad T470 bios password decrypt

F1 to setting, set all security options to default.