Hacking used PS Vita wit ha few Games, no PSN Acc access

[Evilengine]

Hi,
I bought a used 3.60 PS Vita with a few games installed. I can play them.
I have no access to the PSN accout that is connected with the system.
At the moment I copy over all files thanks to the FTP Server.

When I format the system and connect a new PSN acc to it, is there any way to (copy over the old games and) play them?

edit: urgh for the typo in the title.. ^^"

 

[metroid maniac]

Yes.
vd0:registry/system.dreg, vd0:registry/system.ireg and tm0:npdrm/act.dat identify the account and entitle you to that account's games.

 

[Cinnamon]

system.dreg should have your PSN login credentials in plain text...

 

[Evilengine]

It is a phat Vita, is the filestructure different to a slim vita?. I can't find a vd0: folder. I just have these: app0:, ur0:, ux0:

None of these files are found inside of these three folders:
vd0:registry/system.dreg, vd0:registry/system.ireg and tm0:npdrm/act.dat

also some files won't get copied. I tried filezilla and cuteftp. when I retry the copy process some files get copied then, others absolutely not, don't know why.

The password was changed and no need to connect to it for me. From inside of the regular Menu i wasn't able to deactivate the old PSN acc. So I had to starte the System with R+HOME+ON for 5 seconds in rescue menu you can restore the system without the need of the connected PSN account.

The games are not so important to me, but If there is a way, I copied all files then I formatted it. Maybe i can change it to my newly made acc.