spiderman usb pinfinder strange problem
 

hello br
i have a set of spreadtrum cpu 6600l
its pinfinder pinout find success but cannot format
the logs are given below

Start to search the pinouts defines >>>
Pinouts find Success!
Start to search <SC6600M/R/H/L/SC6800> Phone
Connect your phone with USB port please!
[ERR] Can't connect phone,try again please!
Start to search <SC6600M/R/H/L/SC6800> Phone
Connect your phone with USB port please!
[STK] Open COM7 success!
[ROM] Connecting phone and box now...
Synchronising with target now...
"Spreadtrum Boot Block version 2.0
Loading the boot file to RAM...
Loading SC6600L.bin>> Waiting for STK bootloader Program ACK...
CPU ID:66007005
Start to format flash
Format Flash Failure!
[STK] Close COM7 success!