Upgrades from AI4


I just bought a Yamaha N-12 Mixer and it came with Cubase AI4.

My question is can that be updated to later versions of Cubase AI and if not then to say essentials.

I haven’t installed it yet but plan to do over the next few days

Also I created a number of songs on Cubase 5 but no longer have access to that product as the band has split up and it was not mine. Can they be opened in AI4?

Thanks in anticipation