I am running a Cisco Pix 520 with cer 5.0.1 os. I would love to upgrade the O.S. to the current version, but I do not have support at Cisco. Since this is a used home system, I can not afford 2000.00 for a year of support. Could someone give me access to the files I need to tftp the Os to the current version, 6 x? something. I have plenty of ram and flash ram, 128k and 16k I think, My email is [email][/email]