just random question about Isotools

[LunaMoo]

You can't fix anything with this, because nothing is actually broken, we simply doesn't have the key to decrypt update files, they are not public nor shared. So basically until someone reverse engineer/hack those encryption keys which might as well never happen, you'll not be able to successfully update psp games outside of the actual handheld doesn't matter on the emulator and programs used.

Updating with iso tool in such situation will fake a success while actually at best corrupt your iso, you can remove it, it's already broken beyond repair.