You could check the SHA256 checksum. To check it first open up a terminal and then change the directory to the directory or folder which contains the .iso file. To do this enter cd ~/example/path/ in the terminal and replace example/path/ with the path to your file. This should not include the file, it should only have the folder in which it is contained in. Then type sha256sum "your-file.iso" in terminal and replace "your-file" with the name of the .iso file. Compare the checksum obtained with this:
The checksums are at the end.

myself.





I'm glad it worked for you, I sware by the fruity flavor of Popsicle myself hehe.