Re: iOS unzipping a file?

After using the unzip app, I got the iso file for the game and tried loading it. When it opened it said disc read error and when it crashed it said CRC not recognized and to verify and possibly re-dump my ISO? Not sure what any of this means. Again, trying to use the PSP version of Crash Tag Team Racing on iOS mobile PPSSPP emulator

"New to emulation entirely"

So I tried the app and when I tried loading the game it started and looked fine but then it crashed and it said to try redumping the game? Is it a bad rom or am I doing something wrong? I have other games on the PSP emulator and they run fine but I can’t get a good working Crash Tag Team Racing PSP rom anywhere and was hoping this was the one