Before updating, you must know what you are running. Use any of these methods:
Alternatively, use a serial console (baud rate 115200 , 8N1) and send the command:
Before diving into firmware specifics, it is critical to understand what the k8204-w typically is. While the exact specifications can vary by manufacturer, the k8204-w is widely recognized as a low-power, Wi-Fi + Bluetooth LE (BLE) combo module, often based on an ESP32 or similar RISC-V or Xtensa architecture. It is designed for: