The steps when you have to activate the vita after you logged in the new account are somehow flawed.
I did the method where you go into the settings -> psn settings -> activate system.
Here I didn't know what to use. Game activation? Music / video? PS Mobile?
I did all three options (PSM wasn't working btw) and opened AccountSwitcher. On the top it just said "Current account: (unslaved)". So it wasn't displaying my new account name.
Ok I said, next option then and went to the PS Store and downloaded a free theme. Same result in AccountSwitcher...****.
Last option, opened Vita-activator and told it to activate the system, but it failed with an error that said unknown PSID and that I should be scared...wow.
Opened AccountSwitcher again, just to make sure, but again, my account name wasn't displayed.
So for *** and giggles I just restarted the vita and opened AccountSwitcher and fair enough it looked good and my new account name was displaying and it backupped all files correctly.
I then launched vita-activator again to check if the restart might have also helped there, but I got the same error again that my PSID is unknown.
Maybe this somehow helps with the activation code in your implementation? Because for me none of the activation apps worked.
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