Fs Flysky Line Data Cable Connection to Download the Firmware Upgrade Applies for Fs-t6 Fs-i6 Ct6b T4b Fs-i4 For FS-I6 FS-T6 FS-Ct6b FS-T4b Fs-i4 line data cable connection to download the firmware upgrade applies Suitable for transmitter and computer connection, adjusting parameter Brand FS flysky Only the Data Cable NO transmitter