How To Fix - ZWO EAF won't connect - firmware upgrade tutorial

I have a ZWO EAf auto focuser for my astrophotography gear. It has been failing to connect event though it is connect to my ASI Air. Here is how I fixed it by reloading the firmware.
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[@marvinwhisman3333]

Wish you had done this for a PC as well since the files are different.

[@MyEngineeringProjects]

I don't have a Windows machine to test. You could open a ticket up with ZWO. It's possible you have a defective focuser.

[@dadwhitsett]

Really similar. Be sure you have the EAF plugged into your PC [use power supply if 12 volt] then download and unZip the EAF_FWUpdate_win_v3.3.8.. Then Run ElectricDeviceFWUpdate_3.3.8.exe. If it doesn't open then you have to install the Microsoft Visual C++ 2008 Redistributable Setup [run vcredist_x86]. Then open the Update screen and scan for the EAF, then Run. The update will proceed. Very similar to the above Mac version. It will verify the update, EAF Version 3.3.8 or similar.