So if you are using ISO Tool v1.02 , then is best to update to the latest version which is ISO Tool v1.03 now .

This is what the developer had to say about this release of ISO Tool v1.03

readme.txt omission I had to, ISO / CSO when converting length × can cancel button pressed

* Changes
[UPDATE] ISO / CSO at the time of the conversion return YES / NO change to leave the dialog
[BUG] readme.txt in the ISO / CSO describes the conversion stopped
[BUG] The XMB files to prevent corruption of the Memosute from open, add a renaming process after the conversion
[BUG] timeout set to 30 seconds during online update