PIX525 OS upgrade

PIX525 with 256MB RAM, 16MB FLASH still running 5.2(5).  I like to upgrade it to 6.3 and eventually to 7.x.  Can someone please give me detail instructions for a best/safest way to upgrade?    Thank you.  

Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

As long as you have a CCO account and active SmartNet on the PIX, all upgrades are free downloads.
5.2 should give you the ability to simply upgrade to 6.x using the following commands:
pix#copy tftp:// flash:

Where = IP address of your TFTP server

Once you've upgraded to 6.x you will have to convert any conduits to acls before upgrading to 7.x
Here's a document that is a "must read" before upgrading from 6.x to 7.x

altonyoungAuthor Commented:
Do I need to delete the old image on my flash before copying the new one over?  Also, will it ask me to enter keys for my software such as DES, 3DES, etc..  Thank you.  
You should not have to delete the old image first.
It will not ask for a new key.
Introducing the "443 Security Simplified" Podcast

This new podcast puts you inside the minds of leading white-hat hackers and security researchers. Hosts Marc Laliberte and Corey Nachreiner turn complex security concepts into easily understood and actionable insights on the latest cyber security headlines and trends.

altonyoungAuthor Commented:
Sorry I wasn't being specific.   I like to enable 3DES on my pix and I already received the key from Cisco.  Is there another image i need to download and at which point I will need to enter the software key?  Thank you.  

Once you upgrade to 6.x there is a new command that you can use to enter a new key:
PIX(Config)#activation-key xxxxxxx xxxxxxxx xxxxxxx xxxxxxxx xxxxxxx


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
altonyoungAuthor Commented:
Great.  Thank you very much for your help.  
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Software Firewalls

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.