AustinCER
Senior Member
Last Activity: Today, 01:32 PM
Joined: 04-25-2025
Location: Wesley Chapel, FL
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Correct, I use the CH341a programmer tool, which you can purchase on Amazon/Ebay. Depending on which type of BIOS chip it is depends on how you use the tool. Good practice to read the BIOS on the dead motherboard for backup dump in case of anything. Theres been a good amount of winbond BIOS chips that are just 8 pin and I use the Pogo tool.... -
Download the .rar file from hoaca above, has the .bin file....Leave a comment:
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if i recall, we had just flashed the BIOS with the provided bin file and after that the service tag was able to stick and exit manufacturer mode...Leave a comment:
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Can't thank you guys enough. True legends....
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Thanks for the input. I am using the clip. I just went ahead and re-flashed the BIOS with the clean US BIOS and verified the flash and did not run into any errors. Can confirm I am doing everything correct. I have successfully flashed the the clean BIOS 3 separate times with each successfully posting....Leave a comment:
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Tried flashing but did not work. Assumed it wouldnt because I am getting a verification error. Something I did not run into with the Clean BIOS....
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Lenovo Yoga AIO 7-27ACH6 bios
Had the same issue with a Yoga AIO 7-27ACH6 - Type F0G7. Fully powers on and no display. Was able to successfully flash clean BIOS to ensure it was a BIOS issue. Device is back to fully operating and POSTing.
Serial Number: YJ01ECXB
However since it was a clean BIOS, Machine Type and Serial number are invalid. Wondering if someone could successfully preserve that data for me into a BIOS flash .bin. I will include the matching BIOS dumps along with the .bin i used to successfully flash the BIOS. Much appreciated in advance.... -
Thank you! I will do so....Leave a comment:
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Double checked these 2 backups and compared to the first one i just sent earlier, appears to be more data involved. Let me know if still bad, i will then have to remove the chip from the board and do it that way....Leave a comment:
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The Probe method for the WSON8 is brutal. I am hoping this single backup for now will suffice. Please let me know if you need more....Leave a comment:
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Understood, thank you for pointing that out. I will have to get an adapter ordered for that....Leave a comment:
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I believe I have found the other BIOS Chip located on the daughter board (?) Attached are pictures of the GigaDevice Chip and another XMC chip i found on other wing. Please let me know if these dumps are valid. I did not locate any other chip on the main board....
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"Buffer size is not equal to IC size" when attempting to write Post 2 .bin onto IC....Leave a comment:
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Please let me know if they are still bad. I am disconnecting/connecting and detecting before each read....Leave a comment:
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I am indeed using the clip adapter onto the motherboard. Will read more files and post....Leave a comment:
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Using the CH341A Programmer with NeoProgrammer. I can take more readings if necessary. Voltage is 3.3V. The BIOS Chip is XM25QH128C...Leave a comment:
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Should i try with the attached fix.rar mentioned above?Leave a comment:
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I currently have a Lenovo Yoga Book 9 - 13IRU8 with a corrupted BIOS.
Yoga Book 9 13IRU8 - Type 82YQ
S/N - PF4Q7AF2
Attached are several BIOS dumps.
Any and all help is much appreciated!...Leave a comment:
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What do you mean by it requested RAM? Did you try new RAM at all? What about CPU....Leave a comment:
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Check out the above attachments, that is the current BIOS that works, couple copies of it as well zipped up. I didnt wipe BIOS from winbond or anything....Leave a comment:
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