Zorro S Licence and versioning

Hi,
I'm interested to buy Zorro S but I'm not sure to have understood exactly this point

"The Zorro Sponsor module (Zorro S) includes a lifetime license for unrestricted trading with Zorro. It also unlocks the sponsor features in all Zorro 1 versions: no account limits, multiple instances, generating executable systems, live trading support for all MT4 brokers, and a lifetime subscription of all Z strategies."
(http://www.shareit.com/product.html?productid=300577468&affiliate=opg#legal)

It means that if I Buy Zorro S now, I will be able to update zorro until the last version 1.x

For example now the last versione i 1.54 and if will buy this version as soon the new version 1.58 will be official I will be able to use also that?

Buy why there is the option "Download Protection (Duration: 12 months)"?
Without this option I will not able ot update zorro?!

I found the reply here http://zorro-project.com/faq.php
to my first answer

"If I donate a strategy, a script, or money, and get Zorro S, does this also include future updates to Zorro S 1.50, 1.60, etc.?"

"Yes, up to Zorro 1.99."

But still I do not understand the utility of the option: "Download Protection (Duration: 12 months)"

That is some speciality by the online shop. I don't know the details, but basically they store your key files for 12 months in case you lose it, get your harddisk wiped or something like that.