Please add some info about your setup, as detailed in https://retropie.org.uk/forum/topic/3/read-this-first. You also may want to edit your topic's title, it doesn't match the content you posted.

No, use a PS1 emulator.

@mitu I need you to unlock that recent post of mine about the splashscreen. I reposted on that topic because nobody was able to help me with my previous post and the one that you locked had more detail and pictures that might be able to be diagnosed by someone who actually knows how to fix my issue.

@windg That's a good suggestion. I'll try a different psp game to get it to work. This is my first time with psp roms.

I've been using cso as well. I don't really feel any difference than using iso.

@cornishrooster
I have a similar issue.
I set up the psp folder & installed the psp emulator from binary.

My psp ROM shows up in the RetroPie file manager but I cannot get the psp emulator to show on the menu carousel. I converted the iso file to a cso to save space. Hope that is not the issue.

Does anyone have any suggestions? I have been suspecting ES is the issue but I am not sure.

@mitu I think just to allow for user preference. Non x11 platforms can only really be full screen. But if it's not working it can be added as a workaround.

@sleve_mcdichael said in (PSP) CISO or another iso>cso converter?:

Is this safe?

Looks like probably yes. I also found the file listed on https://packages.ubuntu.com/focal/armhf/ciso/download. I don't see where to actually download it from this page, but the md5sum given there does match the file downloaded from the other source. This looks like a rather official source, even if I don't know what Launchpad Librarian (the other one) is.

Will it work?

Also, probably yes. It does run. I compressed two ISOs with ciso on my RPi, and also with umdgen on my PC, and compared them.

For one game, the CSO made by ciso and the one made by umdgen, were identical (yay!), and on decompressing, the output ISO was also identical to the original.

For the other game, the CSOs were different, but they both worked.

On decompressing, they came out still different, but they also both still worked. The one that was made by ciso, when decompressed by ciso, was identical to the original source ISO (yay!). But the one that was initially made by umdgen, when decompressed by ciso was different than the original, but it did still work.

I got about 20% savings overall (10% on the big one and 45% on the smaller one.)

@mitu Thanks for the reply! I’m not at my Pi at the moment but when I get situated, I’ll give that a shot and report back!

Did you modify any of the core options ? You may want to remove them from the core options file and try again.

@bdpyle Word of advice - don't use 'Reset Configuration' in RetroArch, the defaults it creates are not best suited for a Pi/RetroPie installation.

@drdave79 if /etc/emulationstation doesn't exist it would break standard retropie - that's where the carbon theme is kept. can you show a screenshot of how you're trying to navigate to it or something like that?

Do you know how to remove the "custom override" so the es_systems.cfg gets properly updated?

it shows you where it is in the error message - just delete the whole file. obviously that will remove all the custom changes you've made, so if you want to just fix this system you replace it with what's in /etc/emulationstation/es_systems.cfg for the psp.

@mitu i'm back if you're still here for some reason...
i tried again for the log.
here it is: https://pastebin.com/U96FjKBt

@huey no, let me check it