@viralp Behind the scenes "voxl-suite" is really just a meta package with dependencies on all of the debian packages in VOXL Suite.
Therefore if any of the packages that voxl-suite depends on are modified (either removed or downgraded) then "voxl-suite" will no longer be installed.
This includes the system image. Contained in the system image is another meta package called voxl2-system-image which is versioned the same as the System Image. Therefore if there is a system image / voxl-suite mismatch you will see the same effect.
This isn't a major issue, it just means that you are straying from the exact package list defined by that version of VOXL Suite.
If you would like to get to a known good state you download the latest SDK from our downloads page and install it with it's install.sh script
