Working Bios and EC dump for Lenovo B40-30 AIO MB CIH81S

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Caimano
    Senior Member
    • Nov 2020
    • 54
    • Italia
    #1

    Working Bios and EC dump for Lenovo B40-30 AIO MB CIH81S

    I just fixed by cleaning ME Region of the original bios a Lenovo B40-30 All in one which started but did not POST , so I thought to share the working BIOS and EC dump.
    Model : Lenovo B40-30 F0AW
    MB : CIH81S Ver 1.0 5B20G54844
    CPU : iNTEL I5 4460T with graphic processor

    In the zip there are the 8MB BIOS with me clean and the 256KB EC dump.

    Enjoy
    Attached Files
    Tags: None
    • peste
      Super Moderator
      • Dec 2016
      • 12742
      • ROMANIA
      #2
      Re: Working Bios and EC dump for Lenovo B40-30 AIO MB CIH81S

      Originally posted by Caimano
      I just fixed by cleaning ME Region of the original bios a Lenovo B40-30 All in one which started but did not POST , so I thought to share the working BIOS and EC dump.
      Model : Lenovo B40-30 F0AW
      MB : CIH81S Ver 1.0 5B20G54844
      CPU : iNTEL I5 4460T with graphic processor

      In the zip there are the 8MB BIOS with me clean and the 256KB EC dump.

      Enjoy
      try..
      Attached Files
      Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

      >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

      Every donation made will go towards server fees and maintenance costs.

        Comment

        • egelaptop
          Senior Member
          • Jun 2015
          • 123
          • türkiye
          #3
          Re: Working Bios and EC dump for Lenovo B40-30 AIO MB CIH81S

          There are 4 mb bios and 256kb kbc, but there is another 2mb file, can you share it if you have it please?

            Comment

            Previous template Next

            Related Topics

            Collapse
            • AHmad_Salal
              Need BIOS Dump/ROM for Lenovo Thinkstation p500
              by AHmad_Salal
              Hello all,
              I have a Lenovo Thinkstation P500 that is stuck at post with no display, it happened after I changed the memory timings in bios. I can not clear CMOS using the jumper on the motherboard, also tried re-flashing bios suing a USB stick but it also doesn't work. The only solution that I can think of right now is re-flashing the bios chip using an external programmer but the problem is that I don't have the bios dump of p500 for flashing externally and I don't know the location of bios chip. If someone can provide the bios dump and bios chip location it would be really helpful....
              11-28-2023, 05:28 AM
            • hyperwood
              [REQUEST] 2MB BIOS Dump for Lenovo NM-E471 Rev 2.0 (Winbond 25Q16JWSIQ Chip)
              by hyperwood
              Hi everyone,

              I’m looking for a 2 MB BIOS dump for a Lenovo IdeaPad 5 16ARH7H / Legion 5 with mainboard NM-E471 Rev. 2.0.

              The BIOS chip is a Winbond W25Q16FW (1.8V, 2MB) and it's completely unresponsive / bricked. I tried recovery via USB but no success. Now I want to reflash it externally using a CH341A programmer.

              I already found 32MB dumps (e.g. from Vinafix and Badcaps), but they are too large for the chip – and the last 2MB in those files are just FF FF FF....

              ✅ What I need:
              • A working 2MB BIOS dump
              • Matching NM-E471 Rev. 2.0, e.g. JY575
              ...
              06-25-2025, 02:28 PM
            • Habble7
              I need a BIOS dump for the Samsung S49CG934SU monitor
              by Habble7
              The Samsung S49CG934SU monitor does not power on - no LED indicator activity and no response to power button. However, when 21V power is connected, it immediately draws 0.8A of current with no display output. The motherboard processor gets warm, and there is continuous reading activity from the W25Q128BV BIOS chip.

              Suspected Cause:
              I suspect the BIOS may have been corrupted during a power interruption while updating the firmware. The official website provides firmware updates, but they can only be installed via USB flash drive.

              Troubleshooting Attempts:
              ...
              05-22-2025, 07:28 AM
            • Joluvillas
              Lenovo ThinkPad L15 Gen 1 i7 (20U4) Bios and EC dump needed
              by Joluvillas
              Hi all! I was reading on tutorials how to flash a bios to remove password from a bios, and I ended up reading the EC chip instead of the main bios chip, it only gave me a .bin file of 1,024kb, I learned later that that is the EC chip not the main bios chip (I should have read the tutorials here instead before attempting anything, my bad), I went to flash the original backup, the 1,024kb size file into the same chip and laptop is not powering up anymore. I may have screwed the chip or even the motherboard (Hopefully not), I am trying to see if there is a fix before I discard it. I had a couple...
              06-18-2024, 10:35 PM
            • Captaincrap420
              Lenovo Tiny8 triple NVMe IQ6X0IL1 HQ670 NM-D581 Rev 0.5 M90q Gen 3 / P360 Tiny prototype board BIOS dump
              by Captaincrap420
              Hi, I hope this is the right place to post this. This is my first post on this forum.

              A friend helped me get a prototype Lenovo motherboard from China, it's got a hole drilled in it but I'm working on trying to revive it to some degree. I dumped the bios in hopes that it might be useful to someone, since this board is configured with the 3rd NVMe SSD slot and maybe it is useful as a reference for modding another bios to support this function. For example the M90q Gen 2 / P350's unpopulated 3rd NVMe slot footprint maybe.
              This bios dump is straight from the chip, nothing has been...
              11-29-2024, 05:40 PM
            • Loading...
            • No more items.
            Working...