ChromebookParts Help

- Motherboard Reserialization Process

- Motherboard Enrollment Error

- Trouble Shooting

- EMR Film to New LCD Transfer Guide

Motherboard Reserialization Process >>

Motherboard Enrollment Error >>

Trouble Shooting >>

EMR Film to New LCD Transfer Guide >>

Dell 3110 08/64 2-in-1 Grounding Cable Connection >>

• Power on the Chromebook.
• Press the Escape, Refresh, and Power Key's at the same time.
• Press Control + D, Press Enter. The device will restart.
• Once the device reboots, press Control + D.
• You will get a prompt explaining the device will be entering Developer Mode.
• After a short wait, the device will reboot. Press Control + D.
• The device will now be in Developer Mode. This can be confirmed by the blue text "Enable debugging features". As well as pressing Control + ALT + RH Arrow Key (Top Row) where the device will enter the terminal.
• To leave Developer Mode, press Refresh and Power key simultaneously. The screen will go dark momentarily.
• Once the device reboots press the Space Bar key, followed by the Enter key. The device will reboot, and will enter into standard user mode.

Step 1:    Power on the Chromebook.

Step 2:    Simultaneously press the following buttons:
Esc + ⟳ + Power Button

Step 3:    The device will reboot to the Chrome OS recovery screen. Now press:
Ctrl + D

Step 4:    The screen will go black for a second, and Chrome OS Verification will pop up. To start the transition into developer mode, again press the buttons below. (The transition takes about five minutes)
Ctrl + D

Step 5:    When the transition is completed, the device will reboot back to the Chrome OS verification screen. You can either press the below buttons again, or do nothing. The device will make an audible beep, and reboot automatically into developer mode if you do nothing.
Ctrl + D

Step 6:    You should now be in developer mode. To access the console, simultaneously press the following buttons:
Ctrl + Alt + RH Arrow Key 

**Right Arrow Function Key (Top Row) not the actual arrow keys**

Step 7:    Enter the username root (root has to be all lowercase to work and there will be no password line). If you accidentally mistype the username, press enter seven times when asked for a password. (*Note that a username box will pop up, but root will not work at the moment) Once back to the original username box, login with root.

Step 8:    Most Chromebooks have some form of read/write protection. To test if you need to bother messing around with R/W protection on a given model, you should first try changing the S/N. To change the S/N type:
vpd-s “serial_number”=”[Your s/n]”.

**You must include the quotation marks in the command**

If you are working with a Dell model, you will also need to change the service tag. This is command starts the same as the above, but instead of “serial_number” it will read “service_tag”. Press Enter, then after a few seconds either the S/N will have changed or you will be given an error message along the lines of “flashromPartialWrite( ) error.” If you did not get an error message, skip to step 10; otherwise continue to the next step.

Step 9:    This next section will cover how to disable the R/W for the three methods that were listed above. There are three forms: the battery being plugged in, a R/W screw (Example a), and pass through holes you have to jump (Example b).

a.    R/W Screw: Look for text reading “WP Screw” (or something similar to the image below). Remove the screw, and you should be able to now change the S/N.. If you are still unable to change the S/N, wipe the metal contacts with a rag to remove any potential metal shavings and try again. If that doesn’t work, the motherboard may be defective, and might require a replacement.

b.    Passthrough Holes: Look for two holes inside a rectangle with the text “RWWP” (or something similar to the image below) above it. If the motherboard has a heatsink, make sure to check underneath it for the holes. We recommend using a non-insulated paper clip, cutting it down, and bending it like the one that is pictured in the image below. After inserting the paper clip, you should be able to to change the S/N.

c.    Battery Connector: This is relatively straightforward; to get into dev mode, keep the battery plugged in. Once in dev mode, unplug the battery while the device is on. (You could try unplugging the battery while the device is off, but you won’t always be able to get back into dev mode with it unplugged) With the battery now unplugged, you should be able to to change the S/N.

Step 10:    To verify the S/N has been changed and is correct, enter vpd -l. Also while verifying the S/N is correct make sure there is a line that starts with “stable_device_secret_DO_NOT_SHARE”. If no line exists run vpd -s “stable_device_secret_DO_NOT_SHARE”=$(openssl rand -hex 32). This will generate a new code and will allow you to enroll the device. If the S/N was mis-typed, you can do the vpd -s command again to change it. After verifying it is the correct S/N, enter the following command:
dump_vpd_log --force --full --stdout.

Step 11:    To exit dev mode, restart the device by simultaneously pressing ⟳ + Power Button. The device will reboot to Chrome OS Verification screen. Press Space Bar, then Enter to reenable verification. To confirm the S/N change worked, you can press  Alt+V and it should pop up in the top right corner.

If you have received the following error message: “Enrollment Error This device cannot be enrolled to the organization your account belongs to because the device is marked for management by a different organization”, then follow the steps below.

Step 1:   Login into your Chromebook

Step 2:    Once logged in, open the toolbar settings, then click on the gear icon to open the main settings menu.

Step 3:    In the main settings menu scroll to the bottom, click advanced settings, then scroll to the bottom again. At the bottom there should be a button called Powerwash. Click on the powerwash button. The device will restart automatically.

Step 4:   After the device restarts it goes back to the login screen (you do not need to login again). Give it a moment (depending on the Chromebook this could take up to 10 seconds) and a prompt to ‘Reset this Chromebook’ will appear. Click on the powerwash button and a second prompt will appear asking you to confirm you want to powerwash the device. Click the continue button. The device will restart again.

Step 5:   Device will boot to a screen stating “Powerwash in progress…” (this will take about 5-10 seconds). The device will then restart again.

Step 6:   Try to enroll the device again.

Step 7:   If you are able to successfully enroll the device, you are good to go!

Step 8:   If you are still receiving the same enrollment message, enter into developer mode -- If you are unsure on how to do so, follow steps 1-7 listed on the ‘Motherboard Reserialization Process’ above.

Step 9:    After you have logged into developer mode (you can type in clear to clean up the screen if you want), type in “stable_device_secret_DO_NOT_SHARE”=$(openssl rand -hex 32) . This will generate a new enrollment key, which should allow you to enroll the device into your domain. If you get an error message along the lines of “flashromPartialWrite( ) error.”, follow step 9 listed on the ‘Motherboard Reserialization Process’ above to disable read/write protection.

Step 10:  After changing the device stable secret enter the following command: dump_vpd_log --force --full --stdout

Step 11:   To exit dev mode, restart the device by simultaneously pressing ⟳ + Power Button. The device will reboot to the Chrome OS Verification screen. Press Space Bar, then Enter to re-enable verification.

Step 12:   Try to enroll the device again.

Step 13:   If you are still receiving an enrollment error, please contact us at [email protected] for additional assistance.

If you are unable to enroll the device please try these steps before contacting a representative:

Step 1:    Connect the device to the internet and let it update.

Step 2:    Log in fully and powerwash the device.

Step 3:    Go back into developer mode and run this command: vpd -s  “stable_device_secret_DO_NOT_SHARE”=$(openssl rand -hex 32).

To connect the grounding cable on the touchpad to the motherboard, remove the screw from the GREEN CIRCLE location on the motherboard (See image), place the end of the cable over the hole, and replace the screw.