Embedded Files
Chromebooks WITHOUT a Read/Write Protection Screw/switches/Jumpers
Chromebooks WITHOUT a Read/Write Protection Screw/switches/Jumpers
Update 03/04/2020 by Eric T, verified on Acer R752TN-C2J5 and the Acer C733-C37P.
Remove the battery connection from the motherboard.
Put the device into Dev mode.
On the Chrome Start Screen to enter the command prompt.
Press Ctrl + Alt + → (Ctrl-Alt-F2)
If the prompt flashes and goes immediately back to the start screen:
Press Ctrl + Alt + ← (Ctrl-Alt-F1) than Press Ctrl + Alt + → (Ctrl-Alt-F2)
Type: root
Press Enter
Type: flashrom --wp-status
Press Enter
Type: flashrom --wp-disable
Press Enter
Type: flashrom --wp-range 0 0
Press Enter
Type: vpd -l
Press Enter
***If you see the field labeled: "stable_device_secret_DO_NOT_SHARE" You will need to delete this line to remove the device enrollment.
Type: vpd -d “stable_device_secret_DO_NOT_SHARE”
Press Enter
***Update the serial number.
Type: vpd -s “serial_number”=”00000000000”
Press Enter
***Verify the change in the serial number has taken***
Type: vpd -l
Press Enter
***Once verified***
Type: flashrom --wp-enable
Press Enter
Type: dump_vpd_log --force
Press Enter
Type: dump_vpd_log --full --stdout
Press Enter
Leave the device in developer mode once the repair is completed, so that the QC Team can Verify the SN Change.
Leave the device in developer mode once the repair is completed, so that the QC Team can Verify the SN Change.
Chromebooks WITH a Read/Write Protection Screw/switches/Jumpers
Chromebooks WITH a Read/Write Protection Screw/switches/Jumpers
Remove the Read/Write protection screw or flip the switch or add the jumper. See below sections for older models that have these.
Put the device into Dev mode.
On the Chrome Start Screen to enter the command prompt.
Press Ctrl + Alt + → (Ctrl-Alt-F2)
If the prompt flashes and goes immediately back to the start screen:
Press Ctrl + Alt + ← (Ctrl-Alt-F1) than Press Ctrl + Alt + → (Ctrl-Alt-F2)
Type: root
Press Enter
Type: vpd -l
Press Enter
***If you see the field labeled: "stable_device_secret_DO_NOT_SHARE" You will need to delete this line to remove the device enrollment.
Type: vpd -d “stable_device_secret_DO_NOT_SHARE”
Press Enter
***Update the serial number.
Type: vpd -s “serial_number”=”00000000000”
Press Enter
***Verify the change in the serial number has taken***
Type: vpd -l
Press Enter
***Once Verified***
Type: dump_vpd_log --force
Press Enter
Type: dump_vpd_log --full --stdout
Press Enter
Leave the device in developer mode once the repair is completed, so that the QC Team can Verify the SN Change.
Leave the device in developer mode once the repair is completed, so that the QC Team can Verify the SN Change.
Devices that do not display "serial_number" or also have one of the following in the vpd -l output. (Edit both if present)
Devices that do not display "serial_number" or also have one of the following in the vpd -l output. (Edit both if present)
EduGear CMT or any device that only has the MLB_serial_number field in the VPD List: If it only has this field in the vpd list it is a factory refurbished board, you will have to manually add in the serial number field. This example is for the eduGear CMT device. vpd -s saves the field to the system even if the original field is not there. The rest of the fields are not necessarily needed. Same process as changing the original serial_number line in the vpd list.
Type: vpd -s “serial_number”=”0000000000”
Press Enter
If the device has “Product_S/N” do the following
Type: vpd -d “Product_S/N”
Press Enter
For the Dell Chromebook Only
Type: vpd -s “serial_number”=”0000000000”
Press Enter
THEN
Type: vpd -s “service_tag”=”0000000000”
Press Enter
For the Lenovo Thinkpad X131e Only
Type: vpd -s "1s_mt_model_sn"="1S628323U0000000000”
Press Enter
For the Lenovo 11e chromebooks Only
Type: vpd -s "serial_number"="1S20DU003US0000000000”
The first 11 characters, example 1S20DU003US, will need to be taken from the original motherboard, it will very and based on the 11e model (20DU, 20DB, etc), just add the serial number to the end with no spaces.
Press Enter
For individual device types, pictures, ect, select the device type below.
For individual device types, pictures, ect, select the device type below.
Electronic Safe Handling Procedures
How To Perform A Powerwash On Your Chromebook
Perform A Powerwash When Not Signed In
Perform A Powerwash When Signed In
Creating the Recovery Media
Deleting a line from the VPD list
Developer mode always ON.
Wont go to the command prompt, once in developer mode.
Removing Device Enrollment
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