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Problem Flashing Macronix MX25L6445E BIOS Chip with CH341A and EZP2019+ on ASUS X455LD

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    Problem Flashing Macronix MX25L6445E BIOS Chip with CH341A and EZP2019+ on ASUS X455LD

    Hello everyone,

    I'm trying to flash the BIOS chip Macronix MX25L6445E from my ASUS X455LD laptop using both a CH341A and an EZP2019+ programmer, but I keep encountering issues.

    Reading the chip works perfectly, and I can extract the BIOS dump without any problems.

    However, erasing and writing fail every time, regardless of the software I use. (Neo, asprog, ch341, etc)

    I also tried applying 3.3V to pin 3, but it still didn't work.

    I attempted to unprotect the chip, but when I read it back, the registers remained unchanged.

    Out of curiosity, I tried flashing a different chip (Winbond), and it worked flawlessly without any issues.


    Has anyone experienced a similar issue with this chip? Any suggestions on what might be causing the problem and how to fix it?

    Thanks in advance!

    #2
    Update: Solved by using Linux + flashrom. I think there is an issue when using this CH341A on Windows 11

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