how to make any antivirus life long updated version??

AVG is a good and free antivirus (for non commercial use). You can find it at http://free.avg.com/

Definitely u need a patch file to do it. otherwise it is impossible. mostly serials dont work. i downloaded bit defender anti virus from torrents and it was a 30 days trial version. but when i patch the .exe file which runs the bit defender software, after a restart, my bit defender validity changed till year 2047. you can face these like miracles after a patch. so try in torrent sites for good results. that might give you good result. Have a nice time.

well antivirus software are updated daily because new and diffrent types of viruses are produce per second, so they need to be recover and repaired,, so updating a database is necesaarryy other wise it wont delete any new viruses

i think threatfire is also good. but im new of this antivirus.