Users can download the firmware into the I-7242D as following steps:

1.	Power-off the I-7242D

2.	Grounding the INIT pin of the I-7242D

3.	Install the download cable between COM1 of the I-7242D & COM1 of PC 

4.	Power-up the I-7242D & Run 7188xw.EXE

5.	Then press F4 button to load firmware automatically.

	PS: the firmware files are "DN_MRUXX" and "autoexec.bat".
 	    These two files and the 7188xw.exe must be in the same directory.

6.	Removing the line between the INIT pin and Ground pin

7.	Then Key-in “reset” to restart the I-7242D

8.	Pressing Alt & X at the same time will quit the 7188xw.EXE