Si4904 problem

HELLO

I can t read flash (( SI4904))

LOG :



Detection initiated, connect the phone and power on it...

Vcc: null

Gnd: null

Analyzing Rx and Tx...

SI4904 RX: 3, TX: 11

Continue to detect BOOT...

SI4904 NBOOT: 7

Setting...

Boot downloading...100%

Boot downloading failed.Please check the port,or hold the Power on/off button and then re-operation!

>>Error!Please hold the Power on/off button,select a corresponding flash type and try again.

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