First thing you need to do is find a free TFTP server there are piles of them out there as a simple google search for TFTP server will show.\nFirst console, telnet, or ssh into your ASA device then issue the following commands\nen\n<enter your enable password>\nconf t\n<enter your configure terminal password>\ncopy startup-config tftp\nA prompt will come up "Address or name of remote host []? \nType in the ip address of the TFTP server you initially setup. \nNext prompt is "Destination filename ?\nLeave this field just hit <enter>\nCongrats you've just backed up your config.\n \nNow for the restore process:\nen\n<enter your enable password>\nconf t\n<enter your configure terminal password>\ncopy tftp startup-config\nAddress or name of remote host []?\nType in your IP here of your local computer where you installed the TFTP server\nSource filename []?\nIn the first process we left the filename at default so it should be startup-config\nYou should see something like this\nAccessing tftp://172.16.11.50/startup-config...!!\nWriting system file...\n!!\n5277 bytes copied in 0.470 secs\nThat's all there is to it now just issue the command reload and your ASA will reboot to the startup config which we just copied.  It should be noted you have not restored until you issue the reload command because you're still running the running image not the startup one that we've copied over.