Troubleshooting Error Messages in the Classroom App for VEX GO – VEX Library

Using the VEX Classroom App is easy, but you may encounter minor issues from time to time. If there is a problem when connecting, updating, locating, or renaming a VEX GO Brain with the VEX Classroom App, an error message will appear. This article will help you identify the error message and describe what to do, so you can quickly resolve the issue and continue working with your robot.

VEX Classroom App error prompt that reads Low Battery, The VEX GO's battery is too low to perform an update. Charge the VEX GO and then attempt the update again. The prompt has a blue Ok button below.

Error Message When Connecting to a GO Brain

You may encounter this error message when connecting a GO Brain with the VEX Classroom App. Use this section to identify the issue, and see how to resolve it.

VEX GO Brain fails to connect - Connection Error

VEX Classroom App error prompt that reads Connection Error, Unable to connect to VEX GO Brain. Please check that your VEX GO Brain is on and not connecting to other devices and try again. The prompt has a blue Ok button below.

Description

Connection Error will display if a GO Brain is selected in the list, but fails to connect.
This could be caused by one of the following reasons:
- GO Brain has been turned off while connecting.
- GO Brain is out of Bluetooth range of the App.
- GO Brain is connected to another device.

Solution

Make sure that the GO Brain is turned on, charged, and within Bluetooth range.
If it is connected to another device, disconnect the GO Brain from that device and reconnect with the Classroom App.

Error Messages When Updating Firmware on a GO Brain

You may encounter one of the following error messages when updating firmware on a GO Brain with the VEX Classroom App. Use this section to identify what is causing the error and how to resolve it.

Lost Bluetooth connection during an update - Update Failed

VEX Classroom App error prompt that reads Update Failed, The update for VEX GO failed due to a connection loss. Please reconnect and try again. The prompt has a blue Ok button below.

Description

If the GO Brain powers off or loses connection by going out of Bluetooth range during the update process, this message will display.

Solution

Make sure that the GO Brain is turned on and in range, then select ‘Update’ and try again.
Stay close enough to be in Bluetooth range during the update.

Update failed due to App suspension - Update Failed

VEX Classroom App error prompt that reads Update Failed, The update for VEX GO failed due to the app suspending. Please reconnect and try again. The prompt has a blue Ok button below.

Description

If you switch to another App, or your device locks during an update, you will get this message.

Solution

Unlock your device, open the Classroom App, and select ‘Update’ again.
Make sure to keep the Classroom App open during the update.

Update failed due to an unknown error - Update Failed

VEX Classroom App error prompt that reads Update Failed, The update for VEX GO failed. Please power cycle the VEX GO before trying again. The prompt has a blue Ok button below.

Description

If your device or the GO Brain experiences an unknown problem during an update, this message will appear.

Solution

Power cycle the VEX GO Brain (turn it off and on again), then try the update again.

Battery level is too low to update - Low Battery

Description

If you try to update a GO Brain, but the Battery level is too low, this message will display.

Solution

Charge the Battery, and retry the update once it is fully-charged.

If you would like additional information on updating VEX GO on your device see the Update VEX GO Using the VEX Classroom App VEX Library article.

Error Messages When “Updating All Devices”

There are two error messages that you may encounter when ‘Updating All Devices.’ The following section identifies what causes these errors, and describes how to resolve them while updating multiple devices simultaneously.

One or more GO Brains do not update due to low battery or being out of Bluetooth range- Update Failed

VEX Classroom App error prompt that reads Update Failed, The following devices failed to update. Please make sure they are all in range and fully charged, then try again. The prompt has a list of each GO Brain that failed to update, and a blue Ok button below.

Description

You will see this message if one of the following happens while bulk updating:
- One or more of the GO Brains is out of Bluetooth range.
- A Battery is too low to update on one or more of the GO Brains.
Note: The message will appear after the update, and will list only the GO Brains that failed to update. All other GO Brains updated successfully.

Solution

Make sure all the GO Brains listed are in Bluetooth range and fully charged.
Then, select ‘Update All Devices’ again. Be sure to stay in Bluetooth range during the update.

Update failed on all GO Brains due to App suspension - Update Failed

VEX Classroom App error prompt that reads Update Failed, The update failed because the VEX Classroom App was suspended. Do not turn off this device or close the VEX Classroom App while an update is in progress. The prompt has a blue Ok button below.

Description

If you switch to another App or lock your device during a bulk update, you will get this message.
Note: App suspension will stop the update on all devices in a bulk update.

Solution

Re-open the Classroom App, select ‘Update All Devices’ again.
Be sure to keep the Classroom App open and do not lock your device during the update.

Error Message When Renaming a GO Brain

You may encounter this error message when renaming a GO Brain with the VEX Classroom App.

Classroom App fails to rename a GO Brain - Failed to Rename

VEX Classroom App error prompt that reads Failed to Rename, The VEX GO Brain could not be renamed. Please reconnect and try again. The prompt has a blue Ok button below.

Description

This message will appear after typing in a new name if one of the following things happens while you are renaming:
- GO Brain gets disconnected.
- GO Brain goes out of Bluetooth range.
- Your device locks during the renaming process.

Solution

Make sure you are in Bluetooth range and reconnect the GO Brain.
Then, try renaming again.

Error Message when Locating a GO Brain

You may encounter this error message when locating a GO Brain with the VEX Classroom App.

Classroom App fails to locate a GO Brain - Failed to Locate

VEX Classroom App error prompt that reads Failed to Locate, The VEX GO Brain could not be located. Please reconnect and try again. The prompt has a blue Ok button below.

Description

This message will appear if the GO Brain gets disconnected or goes out of Bluetooth range while you are locating.
It will also appear if your device locks while you are locating.

Solution

Make sure you are in Bluetooth range and reconnect to the GO Brain.
Then, try locating again.

For general information on using the Classroom App, please see the Using the VEX Classroom App article.

For more information about understanding the 'Device Info' for a connected GO Brain, see this article.

If you are unable to resolve your issue, please contact VEX support.