YONGNUO YN-622N-KIT YN622N-KIT Wireless i-TTL Flash Trigger Kit with LED Screen for Nikon D70, D70S, D80, D90, D200, D300S, D600, D700, D800, D3000, D3100, D3200, D5000, D5100, D5200, D5300, D7000, D7100 When you prepare to upgrade YN-622N-TX first time, please download the driver and software package Download the most update firmware package and unzip it. Turn off YN-622N-TX, keep pressing mode button and turn on it again. The screen will show firmware Run YN_Trigger_Updater from start menu. Click on Browse... Button and navigate to the firmware If any error is encountered when updating, please turn off and try again from step 3.