Переделай кабель по этой схемке:
1. Open K750 phone connector.
2. Cut red and black crocodile wires off and pull out of connector.
3. Remove black crimp around red wire from cable.
4. Solder now this pin (PIN 10 - CTMS - red wire from cable) with the pin where you cutted of red crocodile wire (PIN 8 - VPPFLASH) together.
оригинал тут:
http://forum.gsmhosting.com/vbb/show...ighlight=POWER
Или подавай питание до 5 вольт