Update Oscar 1.2.0 to 1.4.0 on Ubuntu 18.04

[mcman56]

I'm running 1.2.0 on Ubuntu 18.04 and would like to update to 1.4.0.  I see some notes about purging old versions before installing new ones but I'm not sure this applies to me.  Can I just load 1.4.0 on top of 1.2.0 such that it picks up all of the existing settings?  What is the easiest way?

[Crimson Nape]

No! Purge the old program prior to installing 1.4.0.  There can be files that do not get overwritten that can be incompatible with the newer version.   Your OSCAR_Data file and its contents, which include your settings, are untouched by preforming this purge.

- Red

[untoutseul05]

I didn't remember what is the version what include big modifications to suit the FHS.
you have to purge the old version with :
sudo apt purge <package name> (I think it's oscar but maybe with another case : Oscar or OSCAR)
do
dpkg -l | grep -i oscar
to know
The purge command will erase all the folders (old & new location) (except the one with your own data).
Then after having download the deb file
apt install <deb file with full path - ./ if it is the current directory).