Find out what version of ignition from gateway backup

I have a gateway backup and I want to add other projects to it. Is there a way to find out what version of ignition the gateway was saved as so I can make sure the new projects are at the same version as the existing ones?

Gateway backups are ZIP files. At the root level, they contain a backupinfo.xml file with the information you desire.


What if we only have the .gwbk file?

Different extension, still a zip file.


This info is nicely presented for you in Kindling, by the way.