My first post to the world of Security gurus.

Guys i have this pix 535 sec appliance and duno how to backup its configuration to the TFTP. The version of the firewall is 6.3(4). I'm using Solarwinds as my TFTP application.
TFTP is already prepared.
Here is the command i used in pix.
pix535FW(config)#tftp-server 10.1.1.1 /tftp/cisco/fw_config
To start copying to tftp i type this:
pix535FW(config)#write net :
The error is:
Building configuration...
TFTP write '/tftp/cisco/fw_config' at 10.1.1.1 on interface 1
TFTP error: File Open Error 3
[FAILED]
I'm not good in pix

, im new to it and im starting to learn its features. I need to backup the configuration before purging any policies in the near future. I also heard that my company is planning to migrate to fortinet box. Is there a program that can translate pix commands to fortinet commands?
Thanks.