Debugging device using an lpc interface capable of recovering functions of bios, and debugging method therefor

A debugging device using an LPC (low pin count) interface and capable of recovering the BIOS (basic input/output system) functions, comprising:

• a firmware hub for storing a backup copy of BIOS, wherein when an original BIOS of a computer system is damaged and failed to startup, the firmware hub provides the backup BIOS for the computer system to start up, and the firmware hub uses the backup BIOS to recover the original damaged BIOS of the computer system;
• a decoder electrically connected to the LPC interface for receiving a POST (power on self test) code of the computer system and decoding the POST code into a decoded signal;
• an LPC interface electrically connected to the firmware hub, the decoder, and the computer system to transmit a control signal of the firmware hub to the computer system, and to transmit the POST code of the computer system to the decoder;
• and
• a display unit electrically connected to the decoder for receiving the decoded signal from the decoder and displaying a startup state.