ESP8266 Wifi Bee update firmware via Arduino IDE

Hello I need to change the firmware of my ESP8266 and the easiest way I know to do it is via the Arduino IDE since the ESP8266 Community developed this tool. I tried to do this connecting an FTDI232 to my wifibee switching the module in UART mode and wiring rx-->tx and tx-->rx, gnd-->gnd and vcc to 3.3V. Then i setted on Arduino IDE the following instruction:
Board: generic esp8266 board
flas mode: DIO
flash frequency: 40 MHz
CPU frequency: 80 MHz
flash size: 512 K (64 SPIFFS)
debug port: disabled
reset method: ck
upload speed: 115200
and the com port 7 that is the one I connected the FTDI.

The problem is when I try to upload the sketch I have the following errors:

warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed

Also I tried to upload a firmware using the software provided by dfrobot with the same wiring connections as above but I only get this:

Note:Serial port connected.
Note:Begin find ESP8266.

and nothing more....
where am I wrong??? Is there a way to upload the firmware using the Arduino IDE?