                  Firmware Upload Tips
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1. File Contents: 

   - O56Uxxx.RLN
   - O56Uxxx.EXE
   - O56UMx.xx

   Where xxx is the firmware version, for example, 1.00.

2. Firmware Uploading using Terminal Software

   1) Attach the modem to the serial port
   2) Start a terminal program such as Windows HyperTermial
   3) Change the terminal settings to 8,N,1, 115200bps.
   4) Enter ATUPX and choose X-modem protocol from the  
      terminal program to uploading the file of the firmware.
   

3. Firmware uploading by using ZyXEL utility (i.e., file 'O56Uxxx.EXE)
   
   1) Run the utility "O56Uxxx.EXE" in Windows 98 or Windows 98SE,
      The utility will update firmware in the firmware modem automatically.

   Note 1: This tool is for Win98 or Win98 SE only. 
   Note 2: Please don't disconnect USB port during uploading.
   