Make sure you have your backup
Caution: Resetting your device deletes all data, including your wallet, from the device. It is essential that you have a working backup of your wallet before you reset your BitBox02. If that is not the case you will lose your coins forever!!!
How to verify my microSD card wallet backup?
Resetting your BitBox02
Reset with multiple failed device unlock attempts
If you want to reset your BitBox02 without the BitBoxApp settings, just type in an incorrect device password 10x times. Then your BitBox02 will reset to factory reset.
Reset via the BitBoxApp
Go to “Device Settings” and select “Reset Device.”
You can confirm that you have a valid back-up of your wallet and that you know your passphrase (in case you used one) and click “Reset Device”.