Jump Drive for the Pine Phone Pro

[Barugon]

1) eMMC - turning on the phone and leaving it along will boot to the OS on the eMMC
2) SD card - when the red light turns on after booting it up, hold the volume down button until the phone buzzes and the LED finishes changing colours (I think it cycles from blue to white or something like that). Let go of the volume down button once the LED stops cycling
3) USB storage - when the red light turns on after booting it up, hold the volume up button for a few seconds and you can connect the PPP to a computer to access the eMMC. You can easily flash a new OS to the eMMC using this method. This is the method you can install a new on the PPP using etcher

2) Hold volume down, press and hold power button until red led comes on, release power button while continuing to hold volume down until led changes to yellow.
3) Hold volume up, press and hold power button until red led comes on, release power button while continuing to hold volume up until led changes to blue.