On the KT3 (which also has the 'Android features' .....
Let it discharge to the 'battery empty' picture ....
Connect USB charging cable ...
Status light will go orange ..
Press and hold the power button .
The status light will go through a sequence of 4 (or maybe more) orange/off cycles followed by 2 (or maybe more) green/off cycles.
I never explored any further than that.
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