A method for debugging a ROM in a wireless target device. After a wireless communication link is established with the target device by a host computer, a debug mode change command is transmitted to the target device by the host computer. The debug mode change command is received by the target device and a monitor program is enabled to parse the serial port. A debug instruction from a debugger in the host computer is then received by the monitor program where, the debug instruction includes an entry address and a jump address. The application program jumps to the received jump address upon reaching the entry address location in the application program. An acknowledgement package is transmitted to the debugger in the host computer, and a second debug instruction is received from the debugger, responsive to the acknowledgement package.