BEFORE you put the laptop into developer mode, the Read/Write jumper must be placed on the motherboard. See pictures below.

Picture 8.1

Get to developer mode: Acer C7 Chromebook

Make sure you have placed the jumper in the correct location before moving on to the next steps! Picture 8.1 on the previous page shows the location of the jumper connector.

To invoke Recovery mode:

• • Plug the DC Power in

  • Hold down the Esc + F3 + Power until the display turns on then release.

  • At the screen that says the “Chrome OS is missing or damaged”, press Ctrl + D then Enter.

  • At the screen that says “Chrome OS verification is turned off”, press Ctrl + D, the device will restart and progress into developer mode.

  • Do not touch or do anything for 3-5 minutes until it progresses back to the “Chrome OS verification is turned off” screen, then press Ctrl + D

  • Wait until the device boots to the Chrome start screen, Press Ctrl + Alt + → (Ctrl-Alt-F2)

Once in the command prompt continue to the next page, if not in a command prompt retry the above steps.

Once in developer mode: Acer C7 Chromebook

Type as shown below, if it’s Capital leave it Capital, if its lowercase leave it lowercase. Spaces are important make sure if there is a space you type it in the terminal.

• • Type: chronos

    • Press Enter

  • Type: sudo su

    • Space after “sudo”.

    • Press Enter

  • Type: vpd -l (lowercase L)

    • Space after “vpd”.

    • Once you type vpd -l, this will display the current motherboards information including the motherboards current serial number.

    • Press Enter

  • Type: vpd -s “serial_number”=”0000000000”

    • Replace the 000’s with the Device Serial number from the original device.

    • Space after “vpd”, Space after “-s”.

    • Make sure the serial number is CAPITAL letters.

    • Press Enter

    • If flashromPartialWrite() error displays go back to where the jumper is placed and make sure it is securely in. Re-seat it to make sure.

  • Type: dump_vpd_log --force

    • Space after “dump_vpd_log”.

    • Press Enter

  • Type: dump_vpd_log --full --stdout

    • Space after “dump_vpd_log”, Space after “--full”.

    • Press Enter

  • To close the command line session, type EXIT to close shell and EXIT to close the terminal.

• Leave the device in developer mode once the repair is completed, so that the QC Team can Verify the SN Change.