I wanted to share this guide to help all those who have experienced problems with FTDI programmer. The problem is in the startup phase write to the transmitter. To flash the receiver and the transmitter we need to -1 Usbasp programmer, (remove the jumper 5v) -1 FTDI programmer (it is enough to connect 4 wires to program the tx and rx orange: DTR - TX - RX - GND) -3Ensure that at the time of programming, the transmitter is powered on (you can connect directly to the radio). And the same thing for the receiver (normally feed it through a 6V battery pack, or with a cable throttle on the ESC powered by lipo) THESE ARE THE STEPS: 1-Connect and install the programmer USBasp (remove the jumper to 5V) 2-open the file "openLRSng.ino" in the attached "openLRSng-master" set the writing with the following configuration: after that click on "Write bootloaders" (For my case it was not necessary to flash the receiver with the USBasp) 3 - After flashing the transmitter, you can lay the programmer USBasp then connect and install the FTDI serial programmer. 4-connected in this way to program the transmitter and the receiver DTR -> DTR TX -> RX RX -> TX GND - GND 4 - set the COM port of the FTDI to 115200 (Device Manager of Windows) 5-The problem that I found myself facing is solved in this video: http://youtu.be/zLFRR7sgYQs I found out after many attempts, it was necessary to provide power to the board FTDI ONLY AFTER clicking on the button "Flash firmware". DO NOT WAIT FOR MORE THAN 3 SECONDS TO PROVIDE POWER. Good luck A special thanks to "p66charly" that helped me enormously in the resolution of my problem.