HI BROTHERS
NEED FOR s20-30 mb: bm5406 rev: 1.3 EC / KBC BIOS.
THANKS
NEED FOR s20-30 mb: bm5406 rev: 1.3 EC / KBC BIOS.
THANKS
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Re: NEED LENOVO:s20-30 mb: bm5406 rev: 1.3 EC / KBC BIOS
Did you try the one at post #10 in the other thread ? https://www.badcaps.net/forum/showth...t=52810&page=2
EDIT: Added bios + EC .
BIOS Update for Windows 8.1 (64-bit) - Lenovo S20-30, S20-30 Touch
accn26ww(v2.4&v1.1)Last edited by SMDFlea; 02-12-2019, 05:14 AM. -
Re: NEED LENOVO:s20-30 mb: bm5406 rev: 1.3 EC / KBC BIOS
Thanks for replay dear
My Ec backup size its 64kbLast edited by Siddig; 02-12-2019, 05:40 AM.Comment
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Re: NEED LENOVO:s20-30 mb: bm5406 rev: 1.3 EC / KBC BIOS
I`ll post the 64KB EC .Last edited by SMDFlea; 02-12-2019, 07:12 AM.Comment
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Re: NEED LENOVO:s20-30 mb: bm5406 rev: 1.3 EC / KBC BIOS
64kb is the right size .Comment
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Re: NEED LENOVO:s20-30 mb: bm5406 rev: 1.3 EC / KBC BIOS
Yes its right. I think have power problem because I have flashing 2 dump file but not working.
I get 3.3v on Main power ic ,Kbc ic and power button. A d battery socket.
And 5 volt
But no reason.
Can you help me with Schamtic x boardview.
Thanks dear brother.Comment
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Re: NEED LENOVO:s20-30 mb: bm5406 rev: 1.3 EC / KBC BIOS
The bios and 64kb EC i posted was extracted from the lenovo bios update. There is no schematic or boardview available, sorry.
Check this post it may help (use google translate) . https://ascnb1.ru/forma1/viewtopic.p...&view=previousComment
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Hello everyone,
I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
🧩 Initial Issue- Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
- External display (HDMI) shows
07-24-2025, 02:17 PM -
First of all thanks to all of our members who have posted previously all methods posted here.
Please leave a comment if you find something new,or have anything else to add.
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Find by serial number,model number or series
If you know the laptop serial or model number go to HP support https://support.hp.com/us-en/drivers/laptops .
Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
Operating system and OS version.If... -
Hi, my laptop wont boot at all
With original bios no POST, only LED lights
With alternative BIOS from model TP500LN (flashed via programmer) the notebook works again
Some issues
A- with bios from 500LN, it won't update from bios of model 500LA (from 500LN v203 to 500LA v300)
B- If updated from 500LN version 203 to 300, the battery stops being recognized
Things I tried
1- Update / clear ME: Took the non working bios, made a backup, and did this: https://www.badcaps.net/forum/troubl...theory/trouble... -
Hello, I have an old Dell G3 3579 (ST: 2WQ7LP2-8FC8) with a newer 8FC8 BIOS password. I have successfully attached to the flash chip (W25Q128JVSQ) on the motherboard with a CH341A programmer and made several modifications using Intel FIT (e.g., allow software SPI write) without bricking. I was also able to boot to a modified GRUB shell where I attempted to edit many BIOS security related options like BIOS Guard/Lock, Flash Signature Override, ME FW Image Re-Flash, etc.
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Hello,
I have a Lenovo Thinkbook 15 G2 ITL i5 Laptop (serial number: MP2BFZEF) that when I turn it on, the led on the power button lights up for 5 seconds, then goes out. There's no display and nothing happens.
So I thought it was a Bios problem.
I found 3 bios chips on the board, which I read with a bios programmer: two XMC model bios chips and a Winbond model bios chip. Each XMC model bios chip has two partitions named XM25QH128A [3.3V] and XT25F128A [3.3V]. And the Winbond model bios chip has three partitions named W25Q80BL 3.3V, W25Q80xV 3.3V and W25Q80DV 3.3V....
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