Well do not feel alone as I am having issues with trying to update Godox firmware on my new Windows 10 Lenovo Laptop. I just did numerous Phottix firmware updates a couple of nights ago and had no issues.
I have tried everything to get this laptop to work with the G1 software and recognize the attached device. I have uninstalled and reinstalled the G1 software as well as went into the G1 files and reinstalled the USB drivers, all with no luck even though I am getting confirmation that the software and drivers have down loaded successfully. I even uninstalled the antivirus software, that came with the computer, as that is usually an issue I've had on other computers and still no go.
I did figure out that one of the TT685's I was trying to update has a bad USB port because it will not work on either my new laptop or my XP desk top. Of course it was the first one I was trying to update and it left me bewildered why my XP machine was not recognizing it. A little bit of time wasted there but I was able to load the firmware on all the rest of my devices, with my XP machine, no matter which order I hooked up the device or opened the G1 software. I would make sure that the G1 software would connect to the device on the XP machine and then go over to the laptop with the device and cable where I would get connection failure, when I told the software to connect.
So I am at a loss as to what is going on. I had both of my dedicated Photography computers fail in the last few weeks, hence the new laptop but it looks like if my old everyday clunker XP machine fails then I am SOL.