problem with CC3000, Must repatch FW and driver for new run

Hi everybody 

I'm just new in CC3000. I have complete porting driver SPI for using in LPC 1347. The behavior may be correct. 

In my hardware can do all of simple feature of CC3000 . Example : Smart config ,connect to AP, Scan SSID , disconnect ... ect 

But i have problems. after all of correct feature perform, my CC3000 can't do anything. My firmware in LPC1347 is not hangs in CC3000 API. 

But CC3000 can't connect with every AP or scan... 

I must repatch FW and Driver ... . after that, i can perform my work with my device . 

I have question.

afterconnected to AP, i want to run smart config. A question is : do i need to perform disconnect before run smart config ? 

another , when i connected to AP, i want to scan SSID : Do i need to disconnect out of AP and run API wlan_ioctl_set_scan_params() , after that perform wlan_stop and wlan_start() . What's follow work for the work ?