I9100 Unknown flash device

PLS WHAT CAN BE THE PROBLEM.....THIS IS THE 3PHONE THAT I HAVE BEEN HAVING THE SAME PROBLEM :(:(:(:(



edusa JTAG Firmware version 1.1.0.

Medusa JTAG Hardware S64 revision C.

Detected TAP ID: 4BA00477, IR Length = 4.

JTAG speed : 8000 KHz.

VREF level : 2.85 V

CPU : Samsung S5PC210

Core ID : 4BA00477

ERROR[008]: Unknown flash device. Device No:ID = 0:00000000.

ERROR[035]: Target device has been powered off during connect.

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