Talk:Kobo Firmware Releases
 Getting Revision Info
The KoboRoot.tgz file in each firmware zip contains a file called ./usr/local/Kobo/revinfo. In recent firmware revisions, the first 10 characters of this file (a git hash) are what is used as the build revision in the device's Settings UI.
In older revisions, the entire value is the subversion revision string excluding the initial "r".