Zorin 6.1 Ultimate purchased version

Hi

I have Zorin 6.1 64 bits Ultimate premium that I download and purchased and if I installed that and would I able to upgrade to zorin 9 premium or do I have to buy again?

I dont remember the email address that I purchased premium to download it.

Thanks

http://www.zorin-os.com/premium.html

But please follow the advise on that page - download the core version of 9 and see if it runs OK on your system in 'live' mode before purchasing a new one. If you purchased version 6 a while back then you may have to purchase a new copy.

If you installed your '/home' partition and did not encrypt it after installation, so long as you keep it intact (always back your data up first, including settings which are in the hidden files of '/home' - Ctrl+ H to view all files/folders) do that first,

Wolfman wrote an excellent guide on upgrades:

viewtopic.php?f=6&t=4848&p=35207&hilit=upgrading+to+new+version+of+Zorin#p35207