Having updated my X-T2 to the latest firmware, My Godox TT685F are not working properly. Godox site shows for TT685F update must be download along with G1 firmware. I have downloaded both but am unable to open either.When I double click I am asked what program should I open them with. Has anyone completed this upgrade? If so would be kind enough to send this 77 yo step by step instructions on how to do the update. Thank you in advance for any assistance you may provide.