I could see you deleted the thread yourself Are you using a phone? Sometimes weird stuff can happen if you're using a phone on sites.


Anyway...

I haven't used HEN myself, but I have a couple of PS3's with full Rebug CFW. I assume running PS1 backups would be the same for HEN.
For running the older games (PS1/PS2/PSP) I have always used ManaGunZ (I think it's an iris fork), but there might be a newer version of that manager now. I haven't updated any of my CFW stuff for quite a while now

Anyway, iirc, with ManaGunZ you just navigate to whatever game you want to play and mount it. Games that definitely need to be on internal HDD to run (PSP? I can't recall now) should be copied over first, but to mount a game it will just be a button press (X iirc). Then on the XMB you should see the mounted game where you would expect it to be.
ManaGunZ might actually automatically copy over a game that needs to be on internal if you try to mount it from external anyway