The Modification of the Himalaya Cradle to charge from USB is quite simple:
Underneath the little USB-Connector inside the cradle there is a test-point that
carries USB-5V. Scratch the green paint from the pcb trace that carries the testpoint. Solder the scratched surface to get a solderpad.
Kolophonium is your friend here.
Solder a Shotty-Diode to the pad. The Anode of the Shottky should be connected to the testpoint.
Solder a Bluewire (other colors wont work though :-) from to the Kathode of the Shottky to the internal side of the Fuse which is
intended to protect the external 5V-Supply from short circuits.
The Mod was carried out yesterday.
Pictures and a detailed Desciption will follow soon.