- Press (Esc + refresh + power) to start the wipe process
- Press (Ctrl + D) on the recovery screen (yellow exclamation mark)
- Press (Enter) on the screen that states: “to turn OS verification OFF, press enter. Your system will…”
- On the next screen which has the red exclamation mark, let the system proceed to the next screen automatically.
- Then, on the next screen which states: “The device owner has disabled developer mode for this device…” again, let the system reboot automatically
- When the Chromebook restarts you will be at a screen that states: choose your language and network, you don’t need to fill this out just hit (ALT + V) and the serial number will display in the top right corner of the screen.
Find a Chromebook Serial Number
How to find Chromebook Serial Number:
- Chromebook Manuals
Android Apps on CTL Chromebooks
The CTL NL61, NL61T, J5, J2, J4, J4+ and the X-Panel variations will all support Android Apps. Google hasn't released the exact date but it is expected in Q1 of 2017.
This is the complete list of Chromebooks from Google:
CTL Chromebook J2 / J4
N6 Education Chromebook
J5 Convertible Chromebook
How to Side Load an App (APK) on a Chromebook - Link
Popular location to get APKs **use at your own risk** http://www.apkmirror.com/
Chromebook Wifi Troubleshooting
- Google validates the design with all major network providers
- Always update to the latest Chrome OS version as Google provides improvements to speed, battery life, and connection services.
Steps to Take:
- Check a Chromebook log to see the error - Link on how to do this.
- Contact the group responsible for networking services to help with configuration changes and provide the log details.
- Contact Google Support in the admin panel - The log files will help them analyze the possible issues.
- Run the Chrome Connectivity Diagnostics App on the Chromebook - Link
Questions to ask:
- Are the devices on the current OS version?
- Is it all devices having the issue?
- Are all building / schools exhibiting the issue?
- Do they connect to a hotspot reliability?
- Do they connect to an open network reliably?
- Has the Chromebook been rebooted?
- Has the password been verified? (Log and Diagnostics App will show any issue)
- Is Wifi is turned on?
Deprovision a Chrome Device
When a device is returned to CTL you must deprovision the device to allow for repairs to happen. It is very likely, to service you as fast as possible, that a replacment device will be sent back to you that has a different serial number.
Here are the steps to deprovions the device from Google:
Deprovision Chrome devices
To manage Chrome devices, admins first need to enroll the devices to their domain. Once enrolled, admins can view their devices in the Google Admin console and deprovision devices that are no longer in use, including Chrome devices that are returned or obsolete. Remember when using the Forced re-enrollment policy to deprovision devices that are no longer managed by your domain.
Chrome devices that have been enrolled display a status of Provisioned within the device list. The last sync time indicates the most recent time it has synced the device policies you set in the Admin console.
Deprovision Chrome devices
To remove devices that are no longer active and to clean up your Admin console, you can deprovision Chrome devices. Deprovisioning removes the following from the selected devices:
- Device policies
- Device-level printers
- Access to Kiosk Mode (including Public Sessions)
- Ability for the device to be enrolled in the domain
Do the following to deprovision the devices:
- Sign in to the Admin console at https://admin.google.com.
- Go to Chrome devices > Devices.
- In the device list, select the provisioned or pending device(s).
- Click More Actions and choose Deprovision.
- Choose "Same Model Replacement"
- In the warning message that appears, click Deprovision to complete the process.
- To view the list of deprovisioned devices, select Deprovisioned as the view option at the top left of the device list.
- The deprovisioning process does not affect the licenses used for Chrome device management. Once a license has been used, the license can’t be revoked and used by a different Chrome device.
- To provision the device again in the future, admins must follow the steps in the re-enrollment section.
Demo Chromebook needs Enrollment Credentials
Sometimes due to the wipe and cleaning process the demo chromebooks are asking for credentials to re-enroll into the CTL domain.
We have two domains. Our demo devices are in transition to the education demo domain:
You can use:
Both Passwords are:
Chromebook Recovery Utility
Items you'll need:
- 4GB or larger USB Disk
- Chromebook (Windows Machine with Chrome works also)
- Chromebook to flash
- Chromebook Recovery Utility App - Link
- Image Lists for CTL Chromebooks:
Procedure: (Google Documentation)
Use the Chromebook Recovery Utility
If you need to recover or update your Chromebook, you can use the Chromebook Recovery Utility to create recovery media and get your Chromebook working like new again.
What you need to create recovery media
Before using the utility, make sure that you have:
- A flash drive or other storage media that can hold at least 4GB and that you don't mind clearing.
- An extra Chromebook, Windows, or Mac computer with administrative rights and Chrome browser installed.
Create recovery media
If your Chromebook isn't working properly, you can use an extra Chromebook or another Windows or Mac computer to create recovery media. Otherwise, you can follow these steps on your Chromebook if you want to create recovery media to use later.
If you're using a Linux computer, follow the instructions listed after Step 6.
- Install the Chromebook Recovery Utility app on your Chromebook or on your Windows or Mac computer.
- Open the app.
- Two options:
- Type in the model number of the Chromebook (ENGUARDE C3A for the CTL Chromebook) you want to recover to get the correct recovery image. You can find that number at the bottom of the error message on your Chromebook or on the recovery screen in the app. It downloads the large file each time you create an image. For multiple USB drives use the next step.
- Download the CTL Chromebook image file. Click the "gear" at the top right in the Chromebook Recovery Utility and select "Use Local Image".
- Click the Continue button.
- Insert your storage media into an open USB or SD Card port on your Chromebook or on your Windows or Mac computer. The tool will automatically detect the media.
- Use the drop-down menu to select the appropriate storage media.
- Click Continue.
Important:All of the data on the recovery media will be deleted if you continue.
- Make sure the media you'd like to use for your recovery is listed.
- Click the Create now button.
The tool will then create the recovery image on your selected media. Don't remove the flash drive or SD card while this is happening. After you see the message saying that your recovery media is ready, you may remove it from your Chromebook or computer.
- Use the shortcut Esc+Refresh (above the #4 key), then press down the Power button and wait until you get the Exclamation Point Chrome OS is missing screen.
- Plug in your recovery drive.
- Wait for the image process to complete (about 5 minutes).
- Remove USB and it will automatically reboot.
More info:Restore your Chromebook using your newly-created media.
The Chromebook Recovery Utility partitions the USB or SD media into different sections, which means you can’t store data on it unless you wipe the drive clean.
You can use the Chromebook Recovery Utility to erase the recovery files and partitions so that you can use the USB or SD media for storage again:
- Open the Chromebook Recovery Utility app and click the settings icon.
- Select Erase recovery media.
- From the drop-down menu, select the recovery media you'd like to erase.
- Click Continue.
- Make sure the media you used for recovery is listed. Remember, all of the data on the media will be erased.
- Click Erase now.
The tool will then erase the recovery image on your selected media. Don't remove the flash drive or SD card while this is happening.
After you see the message saying that your recovery media is prepared for formatting, you may remove it from your Chromebook and format it using a tool provided by your operating system.