Re: E14 Type 20RA NM-C421 EC Bios Unlock
I managed to solve.
I managed to solve.
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Last edited by santoslao; 04-08-2022, 05:33 PM. -
Re: E14 Type 20RA NM-C421 EC Bios Unlock
Hi... I need the EC bin (256mb) of Thinkpad E15 type 20RE-S1RD00 S/N PF2D8VY3
Motherboard NM-C421 Rev 1.0
i only can find one in vinafix, the laptop turn on but have many problems in boot and keyboard, i don´t have the original because i replace de ITE. Thanks in advance.Comment
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Re: E14 Type 20RA NM-C421 EC Bios Unlock
Sorry, this is E14 thread. please create a new topic for E15, but need to upload your bios to determine the correct version of Ec because when extracting bios from Lenovo homepage, there will be 2 bios versions for this model (correspondingly there will be 2 versions Ec )↵
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Re: E14 Type 20RA NM-C421 EC Bios Unlock
Hi... I presume that repair fail but you update one 128kb dump and this model is 256kb, you must set the kb in the programmer before read the dump.Comment
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Re: E14 Type 20RA NM-C421 EC Bios Unlock
Hi Hoaca... E14 and E15 have the same motherboard (NM-C421).Comment
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Re: E14 Type 20RA NM-C421 EC Bios Unlock
ecAttached Filesif you find these attachements useful please consider making a small donation to the site
Last edited by hoaca388; 04-21-2022, 11:23 AM.↵
Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
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↵
Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
https://www.badcaps.net/donateComment
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↵
Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
https://www.badcaps.net/donateComment
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Re: E14 Type 20RA NM-C421 EC Bios Unlock
Hello, Sorry I don't mean to hijack, What chip is the EC chip ?
I have a locked E14 and I have a bad CRC error.
I have tried all the dumps I can find maybe I need to program the EC.
Any info will be great thanks.Comment
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Re: E14 Type 20RA NM-C421 EC Bios Unlock
Looks like an I/O chip. Usually it can be a big chip with lots of pins.
https://www.google.com/search?q=EC+c...h=722&dpr=1.25↵
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Re: E14 Type 20RA NM-C421 EC Bios Unlock
Thank you hoaca388, Not what I wanted to see but it is what it is, I do
not have the programmer for this not unless the T56 can do it.
Maybe I will treat myself. Thanks mate.Comment
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Re: E14 Type 20RA NM-C421 EC Bios Unlock
Please. i try auto patch v0.2 but not work.
Lenovo E14 Model 20RB
Winbond 25Q128JVSQ
I/O- IT8227E-256 - 1948-BXA
Can anyone clean?
tksComment
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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.
Unfortunately, some of these modifications like to Intel BIOS Guard failed because it is fused into the PCH. Also,... -
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 -
Hello everyone,
I am requesting urgent assistance to unbrick my laptop, a rebranded TongFang GK7MRFR chassis. The laptop is completely dead following a faulty in-OS EC flash attempt.
I have successfully used a CH341A programmer and can read/write/verify both flash chips, but using my backups/extractions has failed to restore power. The root cause is likely a corrupted Intel Management Engine (ME) region or an incompatible EC/BIOS pairing. System & Hardware Details- Barebone / Chassis: TongFang GK7MRFR
- MB: MB: GK5MP5X V1.0 Prod :GK5MRFV10T04201310281
- Rebrand: PC Specialist
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Hi,
Could someone help trying to unlock this BIOS, seems that Dell have changed the layout of new Dell Pro 8FC8 bioses from checking HXD - 4000 bits do not need changing, only 2000. However after FF the section starting from '01000' upto 2000 bits and then soldering the chip back it seems that the microchip on the motherboard is recovering the bios back to original settings after first boot. Has anyone found a way to crack this extra layer of security Dell have implemented? Seems both HP and Dell have upped bios security to match Lenovo by implementing extra measures on a separate... -
Hello everyone,
I recently bought a non-working Asus Zenbook Pro Duo OLED UX8402ZA that was listed for parts only. The seller mentioned that it had no display output but that the charging lights worked.
When the laptop arrived (without a charger and SSD), I connected a charger and confirmed with a multimeter that it was charging the battery. However, when I tried to power it on, only the backlight of the secondary display came on. There was no image, and it didn’t boot into the BIOS.
I decided to try flashing a new BIOS, but since I didn’t want to desolder...
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