Motorola Moto Z Play Troubleshooting Manual page 25

Power Management – Force Blankflash Mode
● Sometimes if a board has software already flashed, or there
was some problem with software, a board can be forced into
this mode by shorting two highlighted pins on the debug
connector.
● When the board is in this mode, blank flashing can be
attempted to reflash the device and/or find more information
on the failure.
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Moto Z Play (Droid)/Moto Z Play
BASEBAND TROUBLESHOOTING GUIDE