no, you can't use an official update with a fake package. it (dumping games) can be a bit time-consuming, but it's pretty easy to do. I think final fantasy x/x-2 remastered took about two hours from dumping all the way to finishing install of fake package. thus far, I've had 0 failures, but I only have 13 games. remember to back up any dlc you have (must use ftp) and you'll need to inject the original keystone. I believe orbis creates its own keystone as the sce_sys seems to be all done automatically (you either have sce_sys or image0 -- the game files minus the param.sfo, which is in the sce_sys), so the force command in cmd prompt tells the system to overwrite it. you'll have to make the package modifiable for this to work. you can do that when building the package. I have a tutorial on it as does @KiiWii . it's confusing at first, but you'll get the hand of it. you only need the keystone if you have saves btw, so that's what I did. I just used the keystone for all of my legit saves. fake saves should be okay without it.