to try and fix a specific file that's giving you this error?
Many users report that updating from PowerISO 7.x to 8.x or 9.x resolved the "unsupported format" error. the file format is invalid or unsupported poweriso
Once you’ve resolved the immediate issue, adopt these best practices to avoid seeing "the file format is invalid or unsupported" again. to try and fix a specific file that's giving you this error
Copy the file to a short, simple path like C:\test\image.iso . If it opens, the issue was environmental. the issue was environmental.