If your license of Cubase 11 is registered in your Steinberg account (and not only present on the dongle), you can directly update it to Cubase 15.
The following page contains further information on how to buy and perform the update:
You can purchase the update directly from the Cubase product page after clicking on “Buy Cubase 15” there.
You don’t. You navigate to steinberg dot net, locate their “buy Cubase 15”, and select the “upgrade price” as someone else mentioned…and buy it.
How does Steinberg know you already have 11?
Log into your personal Steinberg account and you see your dongle registered there (under hardware) as well as your dongle-based registered earlier Cubendos.
Steinberg sees that too.
Once you have purchased, downloaded and installed the new cb15…you’ll navigate back to your personal account….where you’ll then see your newly purchased cb15 with its clickbox to “activate”. Done.
I use C12 in rehearsal and C15 at home. Works without any issue with the same .cpr files. But I never had .cpr files larger than 100MB. 9 months ago, I had C8 in rehearsal and C14 at home, which works also fine.
I did some testing and it is quite complicated, but I am 100% sure I got it right. All projects started in C13 will open in lower cubase like 12 or 11. All projects started with the create empty project from the hub from C14 and C15 will not open in C12 and lower. All projects started in C14 or C15 from a named template, that I tested and I did not test all templates (of course) do open in C12 and lower. So these templates are started in C13 or lower.
So in your case, wanting to use C12 and C15, never start a project from the empty project command in C15. For safety you could save an empty C12 or C13 project and drag it to the template folder in C:\Users\your username\AppData\Roaming\Steinberg\Cubase 15_64\Project Templates or C:\Program Files\Steinberg\Cubase 15\Project Templates\Cubase Pro
I mostly start a project in rehearsal (C12). But I’m sure I started at least one in C15 empty from hub. No issue with loading in C12. Both C12 and C15 are macOS. Maybe there is a difference to win PCs.
That is an interesting point regarding apple! Could you try starting an empty project in C15 from the command, so not from the list of templates and repport back? No hurry!
I never use macs, so I don’t know if the 13.0.30 fix was also for macs.
Yes, I can try and will report on Friday. What surely works, cause I did it several time and with every project. When I use the backup function with C15. The new file could be open with C12.