It sounds like op tried putting h-encore on ur0 (not injecting, just dropping the files there in vitashell) so they didn't need it on ux0. However, the Vita wasn't designed to run retail games/demos from sysnand, so it doesn't work.
It sounds like op tried putting h-encore on ur0 (not injecting, just dropping the files there in vitashell) so they didn't need it on ux0. However, the Vita wasn't designed to run retail games/demos from sysnand, so it doesn't work.
H-encore runs as a normal game/app from your Livearea. If you remember the process to transfer it to your Vita initially, you can notice that what you are actually doing is modding a game demo (PCSG90096) and exploiting it's vulnerabilities to run H-encore instead.
If you try to install it on ur0: it won't work, as the Vita can only run games/apps from ux0: by default. H-encore as it was released it's not a plugin for you to put it on ur0:.