Acer Aspire A715-42G EC Firmware needed

[ElMaDragon]

Model: Acer Aspire 7 A715-42G
Board: GH5VZ LA-K831P(Manufacturer:ChuanYi)
Specs: CPU:Ryzen5 5500U
GPU:GTX1650 Laptop 4G RAM
RAM: DDR4 8GB 3200Mhz(for testing)
Strage:M.2 NVME 500GB(for testing)

Hi everyone,
I would greatly appreciate it if someone could provide a dump of the EC (KB9022Q D) for this laptop.

I recently purchased this laptop in a non-working condition. After checking for short circuits and verifying that all voltages are present and within expected ranges, I concluded that the power-on sequence is not progressing and the issue is likely with the EC.

It appears that the EC may have been replaced previously, as there are visible signs of soldering on the chip. I inspected all EC input/output signals with an oscilloscope and found some unusual behavior—for example, signals that don’t make sense for this model's power sequence, and SPI signals coming from pins that aren’t used for SPI flash in this design.

Based on this, I suspect the EC firmware is either missing or incorrectly programmed. That’s why I’m looking for a proper EC dump for this specific model.

Thanks in advance for your help!

[hoaca388]

I'm sorry, but due to certain circumstances, I'm unable to share the BIOS backup.

https://www.badcaps.net/forum/troubl...5-42g-la-k831p Based on the schematic posted on this forum, the BIOS ROM appears to be connected directly to the APU and not to the EC.
So I believe the EC firmware is not included in the BIOS.
Is it still possible to extract the EC firmware from the BIOS in this case?

Here

[hoaca388]

Model: Acer Aspire 7 A715-42G Board: GH5VZ LA-K831P

Hi everyone,
I would greatly appreciate it if someone could provide a dump of the EC (KB9022Q D) for this laptop.

I recently purchased this laptop in a non-working condition. After checking for short circuits and verifying that all voltages are present and within expected ranges, I concluded that the power-on sequence is not progressing and the issue is likely with the EC.

It appears that the EC may have been replaced previously. I inspected all EC input/output signals with an oscilloscope and found some unusual behavior—for example, signals that don’t make sense for this model's power sequence, and SPI signals coming from pins that aren’t used for SPI flash in this design.

Based on this, I suspect the EC firmware is either missing or incorrectly programmed. That’s why I’m looking for a proper EC dump for this specific model.

Thanks in advance for your help!

You MUST:

• Read BIOS guides, methods, resources and tools
• Try the method at BIOS guides, methods, resources and tools before requesting help
• Explain you were not able to succeed with the methods at BIOS guides, methods, resources and tools
• Use search function in case someone already answered your request
• Post under a related thread if it exists
• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.
• Name your thread with make, full model numbers and request
• Provide a BIOS/EC dump if possible
• Attach files directly to your post instead of linking to external websites
• Post what the problem is, be specific - black screen, no boot, running slow, password. Do NOT post "clean me", "clear bios", "clean bios", "fix bios", "bios need" or other such terms

[ElMaDragon]

You MUST:

• Read BIOS guides, methods, resources and tools
• Try the method at BIOS guides, methods, resources and tools before requesting help
• Explain you were not able to succeed with the methods at BIOS guides, methods, resources and tools
• Use search function in case someone already answered your request
• Post under a related thread if it exists
• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.
• Name your thread with make, full model numbers and request
• Provide a BIOS/EC dump if possible
• Attach files directly to your post instead of linking to external websites
• Post what the problem is, be specific - black screen, no boot, running slow, password. Do NOT post "clean me", "clear bios", "clean bios", "fix bios", "bios need" or other such terms

Sorry, I'll correct the board vendor and specifications.

[SMDFlea]

Sorry, I'll correct the board vendor and specifications.

Can you post your bios backup, it might be possible to extract the EC from that.

[ElMaDragon]

Can you post your bios backup, it might be possible to extract the EC from that.

I'm sorry, but due to certain circumstances, I'm unable to share the BIOS backup.

https://www.badcaps.net/forum/troubl...5-42g-la-k831p Based on the schematic posted on this forum, the BIOS ROM appears to be connected directly to the APU and not to the EC.
So I believe the EC firmware is not included in the BIOS.
Is it still possible to extract the EC firmware from the BIOS in this case?

[hoaca388]

I'm sorry, but due to certain circumstances, I'm unable to share the BIOS backup.

https://www.badcaps.net/forum/troubl...5-42g-la-k831p Based on the schematic posted on this forum, the BIOS ROM appears to be connected directly to the APU and not to the EC.
So I believe the EC firmware is not included in the BIOS.
Is it still possible to extract the EC firmware from the BIOS in this case?

Here

[ElMaDragon]

Here

Thank you very much for the EC firmware. I’m sorry to bother you, but based on the pin configuration in the schematic, it seems that the KB9022Q D firmware for the Acer A715-42G might be customized.
Is this firmware specifically customized for the KB9022Q D in the Acer A715-42G?

[hoaca388]

Thank you very much for the EC firmware. I’m sorry to bother you, but based on the pin configuration in the schematic, it seems that the KB9022Q D firmware for the Acer A715-42G might be customized.
Is this firmware specifically customized for the KB9022Q D in the Acer A715-42G?

I don't know, this is EC from Acer homepage .EXE file.

[ElMaDragon]

I don't know, this is EC from Acer homepage .EXE file.

I have a quick question. You mentioned it was from the EC .EXE on Acer’s website — is it extracted from the BIOS***.EXE(*is version) file for the A715-42G?

[hoaca388]

I have a quick question. You mentioned it was from the EC .EXE on Acer’s website — is it extracted from the BIOS***.EXE(*is version) file for the A715-42G?

Yes.

[ElMaDragon]

Here

After flashing the firmware you kindly provided, the laptop successfully booted up. I can't thank you enough.