http res.on('close') never called for some GET requests

I spent some time to analyze the problem... It seems to be a problem with my CC3000, because sometimes the same code worked and sometimes not...

I get such errors very often:

ERROR: Timeout in CC3000 driver (4103)
ERROR: Connect failed (err -1)
CC3000 WiFi is not responding. Power cycling...

and

ERROR: Socket error -1 while sending

Maybe it is a problem with the firmware. Do you know exactly which USB cable I need for an update?

What is the state of the ESP8266 problems? Maybe I can use that, if these are solved.