Today I finally got two HM-10 modules. I did flash firmware using this tutorial. It worked until I didn't send
AT+RENEW command. Now, LED blinks, I see device in BT terminal(Android phone) but I can't connect to it. Terminal says
Connection failed: write descriptor failed. I tried sending commands over COM port from PC, but it doesn't responde.
Also I connected pin 11 to GND, problem is still here. Strange thing - After firmware flash,
AT+HELP doesn't exist, while
AT+HELP? returns some website.
For second module, LED doesn't blink but I see module in BT terminal. It also stopped working after
AT+RENEW. When I try to connect, I get same error.