1. First, turn off the Lyme education tablet. At the same time, press and hold the lock screen button+volume button for about ten seconds to enter the recovery mode.

2. Click two "Erase" options respectively, enter and select "Yes" to confirm the deletion of the file. Select the "applyupdatefromsdcard" option and select the downloaded brush package. After the brushing is completed. You can choose "rebootsystemnow" to execute and restart.