PiPO M8 - Manual (Page 20)

２０
DS820 803D: press the M key for a few seconds, at the same time press
“reset”, release M key until the tool finds out your tablet.
M8: press the ESC key for a few seconds, at the same time press “reset”,
release ESC until the tool finds out your tablet.
M1M2 U2 S1: press the “ volume –“ key for a few seconds, at the same
time press “reset”, release” Volume – “ until the tool finds out your
tablet.
M3 U1 S2: press the “Volume +”key for a few seconds, at the same time
press “reset”, release “Volume +” until the tool finds out your tablet.
3. After the PC finding out the tablet, and the device icon
turns green, click “upgrade” for upgrading.
Note: If the device detected under the status of Pink , please
click “Switch”, the upgrading status will switch to Green (standby status)