ERROR[000]: Unable to halt core.

plz team help .



Selected device model: Samsung GT-I9070

Connecting. Please wait...

Resetting target. Please wait...

VREF = 0.0V is less than required level. Please check target device power supply.

Medusa JTAG Firmware version 1.1.0.

Medusa JTAG Hardware S64 revision B.

Detected TAP ID: 62286041, IR Length = 6.

ERROR[000]: Unable to halt core.

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