Add chip to EZP2019 programmer for Lenovo ThinkPad X1 Yoga

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  • mr.Data
    Senior Member
    • Sep 2018
    • 74
    • Netherlands
    #1

    Add chip to EZP2019 programmer for Lenovo ThinkPad X1 Yoga

    I have a ThinkPad X1 Yoga 4th gen with a BIOS password.

    It seems that the password is stored on the chip GD25B256D which I found and desoldered.
    Now my EZP2019 cannot read it but I can add new chips to the database. There is however some data needed that I cannot seem to find anywhere in the datasheet of the chip itself:
    Type: SPI_FLAH
    Manufacturer: GigaDevice
    Name: 25B256D
    Delay: I think it's 30 but not 100% sure
    class: 25 flash??
    Flash: 256B
    Flash page: I don't know
    Voltage: 3.3V
    Algorithm: No idea
    Chip ID: Cannot find
    EEPROM: ???
    EEPROM PAGE: ???

    Some help would be very appriciated
    Attached Files
    Tags: None
    • megaraider
      Badcaps Veteran
      • Jul 2015
      • 307
      • Portugal
      #2
      Re: Add chip to EZP2019 programmer for Lenovo ThinkPad X1 Yoga

      Originally posted by mr.Data
      It seems that the password is stored on the chip GD25B256D which I found and desoldered.
      Now my EZP2019 cannot read it but I can add new chips to the database.
      The same as W25Q256FV
      [might be Write protected!]

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