My Akko 5075B Plus cannot work after updating the Epomaker 5075B V307 firmware.

Please note that different versions of the keyboard require specific firmware. Using the incorrect firmware, such as one from another brand, can cause the keyboard to stop working.

5075B has 7~8 different FW versions based on different IC/LED chipsets. It is VERY easy for users to load the wrong file and BRICK the device. To resolve this, please provide the EAN number (6975XXXXXXXX) that you could find on the outer box so we can send the right firmware to you.

Once we have this information, we can provide you with the correct firmware and instructions to restore your keyboard.