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This is not as easy as it sounds for the AD Witstro lights, which often come equipped with two different types of USB ports. Make sure you're using the correct cable and port for firmware updating the device. And, of course, your cable might just be bad. Some USB cables are solely for charging and do not have the connections for data transfer. If the Godox application doesn't recognize the device, consider trying a different cable. G1 and G2 installers will also launch a second installer to add a custom USB driver. Check the Godox downloads page to make sure you're using the correct application for your device.

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dfu files G3 is for AD400 Pro and later devices that use. fri files G2 is for AD200 and later (but pre-AD400 Pro) devices that use. Godox has three separate firmware updating apps. Requesting the firmware from your retailer or Godox may be your only recourse.

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The only way to fix a mismatch like this is to reload the proper firmware image, but this depends on the device being able to recognize the firmware update request, and sometimes the correct/current firmware image you need is not available. If your device does not yet have a firmware update posted, suck it up and wait until it does. So many non-Canon TT350 owners bricked their flashes with this update, Godox eventually posted the initial versions of the TT350 firmware. TT350 users found this one out the hard way when Adorama mistakenly posted the TT350- C update (specifically for adding compatibility with some newer EOS M bodies) as a generic TT350 update. Each device has its own separate firmware file for a reason. While a TT685 and V860II might be identical in UI and features, the fact that they both use different power sources means the firmware images are not identical. You might be able to fix it if you can overwrite it with the correct one, but you may also have a bricked device that needs to be returned. With Godox speedlights, the E9 error means you've loaded the wrong firmware image. This is a basic tenet of all firmware updates: firmware is closely tied to hardware configurations, and any hardware differences can mean bricking a device if you overwrite with the wrong firmware image. Whatever you do, DO NOT USE A FIRMWARE FILE FOR A DIFFERENT DEVICE. Here are some common issues with Godox firmware updating: Mismatching firmware file

Completely uninstall virtualbox windows virtualbox.chdk