Need answer flashing cpu 6577
 

I have samsung china copy I9500 with cpu 6577, it hang on logo. Android device.
Cant done by wipe with buton, so i use volcano, but??
WHY IT STUCK on >>Analysis of USB port...
I only solder RX, TX, and Ground.

What meaning of analysis of usb port, are it must use usb or rxtx????




Detection initiated, connect the phone and power on it...
Vcc: null
Gnd: 5
Waiting for phone's response,please press Power on/off button..
Connecting...
CPU TYPE:6577
Hardware version:CB00
Software version:E201
Boot downloading complete!
EMMC_ID:0x110100303034473930100A1AF00F5001
EMMC_PRODUCT_NAME: SAMSUNG :0x303034473930
EMMC_BOOT1_SIZE: 0x00200000
EMMC_BOOT2_SIZE: 0x00200000
EMMC_PRMB_SIZE: 0x00080000
EMMC_GP1_SIZE: 0x00000000
EMMC_GP2_SIZE: 0x00000000
EMMC_GP3_SIZE: 0x00000000
EMMC_GP4_SIZE: 0x00000000
EMMC_USER_SIZE: 0xEC000000

>>Analysis of USB port...