The K8 pro is not working in wired or Bluetooth mode. There is only a solid red light on the first icon when the K8 is connected by cable.

Please refer to the link to flash K8 Pro with the entire chip erased. If you failed to install STM32CubeProgrammer App, try the following steps.

1. Turn off the clean/security App.
2. Download the STM32CubeProgrammer from the official website.

For further issues, please contact us at [e-mail] and our support team will reply to you within 48 hours.