@ant
I presume you are referring to this note in the release notes?
The SQ has a main image and back-up image for stability and redundancy. If an update has
been carried out, and the SQ boots into an older firmware, the update should be carried out
again to ensure both images are running the same version.
This is only relevant if the SQ boots into older firmware.
With a normal firmware update, both images are updated by default 🙂
Thanks,
Keith.