My website uses the Dodo theme but I think a former colleague may have made some customisations to it.
An update is now available which I would like to install but would like to test it first - just in case the customisations are lost in the process. If I manually download and install the update (and give the relevant folder a slightly different name) will I then be able to see it in WP as an additional theme which I can preview?
Also, if I then apply the new theme, should I then be able to return to the original theme version if necessary?
Or is there a better way of testing an updated theme and rolling back if necessary?