NM-B452_BIOS

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Hasph
    Member
    • May 2021
    • 13
    • Israel

    #21
    Re: NM-B452_BIOS

    Originally posted by 69d0b913
    managed to do?
    Yes

    Originally posted by 69d0b913
    what was the solution?
    quite tricky

    1. Extracted the BIOS from last updata (lenovo's original).
    2. Copied the DMI info from the original backup (seen it mentioned here).
    3. Flashed it
    4. Shorted jcmos1 on the mobo (until... powered on a few second.. powered off, removed short).
    5. Followed the procedure mentioned by the OP... (from step 3 (autopatch --howto).

    P.S. I dont know why it didnt worked if skiped step 4 (shorting jcmos1 on the mobo)
    Last edited by Hasph; 05-12-2021, 03:51 AM.

    Comment

    Related Topics

    Collapse

    • TimScrawn
      MDM removal on 16 inch 2019 A2141 MBP & 15 inch 2018 MBP A1990
      by TimScrawn
      Hi there,

      This is my first post. I just wanted to come here to get a clear answer from some people about MDM removal on the 16 inch 2019 A2141 MBP & 15 inch 2018 MBP A1990. I have seen a lot of things on MDM removal, and wanted to know exactly what is needed to remove it, and what the best option is in 2024 when running Sonoma.

      I know that Checkm8 have an MDM removal service now, that seems to be a permanent removal. I also have heard you can remove the T2 ROM and use a programmer to read the data and change the serial number. Im not 100 percent sure if this is a...
      06-23-2024, 09:41 AM
    • plyanthony
      Razer Blade 15 no external display with attached screen disconnected from motherboard
      by plyanthony
      Computer in question : Razer Blade 15 2020 Base Model
      Model# RZ09-03286E22
      BIOS CHIP: WINBOND W25Q128BV

      What I'm trying to accomplish:
      I want the computer to properly boot with an external display with the attached display disconnected from the motherboard. I have a CH341A programmer and full capability of modifying the BIOS easily. I Have tried various setting changes to no Avail.

      What I've tried thus far: Too much to note and I really dont remember everything I changed but here it goes.

      W/Stock BIOS - 1.06:
      Disconnect the...
      02-01-2023, 09:35 PM
    • DARNO786
      M720Q Bios Password removal
      by DARNO786
      Hi guys i have an m720q bios which has a password on it.

      i tried Patching with the autopatcher but it gave an error

      it has also shows up with the 0199 error on boot

      Anybody know how i can patch this?


      Thanks...
      04-25-2024, 07:13 PM
    • Badpatch02
      Thinkpad X380 Yoga supervisor password removal + Intel ME removal question
      by Badpatch02
      Hi all, I'm new here, a few words about myself: CS student, interested in hardware stuff too - tinkering my whole life but with practically no experience when it comes to firmware "hacking".

      So I have this X380 Yoga with a supervisor password in place and before doing anything stupid I figured I'd rather ask.
      I plan on using the tool from this thread: https://www.badcaps.net/forum/troubl...password-remov...
      11-30-2024, 05:22 AM
    • lucaszmn
      Summary of BIOS Whitelist Removal Problem Lenovo Thinkpad T560
      by lucaszmn


      Summary of BIOS Whitelist Removal Problem


      Problem:
      I am attempting to remove the WWAN card whitelist from my Lenovo ThinkPad T560.
      Initial Findings:
      • My current BIOS version is N1KET58W (1.45).
      • I have a CH341A programmer and have successfully created two full backups of my BIOS.
      • I have the ability to use command-line tools on a Linux machine.
      Troubleshooting Steps & Conclusions:
      • I attempted to use several automated and manual patching methods on my N1KET58W (1.45) BIOS, including using hex strings. These attempts all failed.
      • I concluded that the
      ...
      08-12-2025, 03:01 PM
    • Loading...
    • No more items.
    Working...