Hi. Do the following to clear the cache partition from your Android's system recovery partition
- Access the recovery mode by using a key combination while your Android device is on off mode (let us know should you require help with this step.
- From the displayed Android Recovery Mode menu - scroll to 'Wipe cache partition'
- Wait for the wiping to complete - 'Reboot now' will be highlighted when the wiping is done
- Short press the Power key or Vol Up to reboot