My Akko 5075B Plus cannot work after updating the Epomaker 5075B V307 firmware.
Please note that different keyboard versions use different firmware. You don’t need to update the firmware if your keyboards could work well.
You can try updating the firmware in wired mode to restore the original version.Akko 5075B Plus firmware( V301)
We are sorry that we don’t have the firmware for Mac right now. It’s just a suggestion that you can update the firmware on windows, and then use the keyboard on Mac.
Warning: Updating firmware may have risks. The keyboard will be bricked if not well connected during the upgrade, which is not under warranty.