Solved: Reseting ZyXel GS2200-48 switch, how?

I just got GS2200-48 for cheap from my friend. There is just one problem, no one knows the username/password for it.

No problem, i thought, the switch can be reseted via COM-port, as mentioned in ZyXels manuals. But the manual tells me to upload factory-default configuration file, I just cant figure what file/where can I get that file?

So I have the GS2200-48 connected to my spare PC (Running Windows XP) via COM1, and TERA TERM listening to COM1. It works, I cant get to the Debug mode and enter commands. I just dont know where to get that factory-default configuration file to upload?

I am new to COM-ports and operating with switches, so any help would be great. Anything else you'll need to know?

Image of ZyXel manual below:
Image may be NSFW.
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SOLVED!
I managed to upload the new firmaware via COM-port and so reseted all the settings :)
In debug mode I used command: ATUR to upload the *.bin and the used ATLC to upload the *.ROM and thats it!