1. Extract files from com_bfsurvey_pro_v1.3.2.zip

2. Copy entire contents (except css folder if you've customised style) of
"component" folder into /components/com_bfsurvey_pro/
(overwrite existing files).
Note: if you have customised the style.css, you may want to add the two new styles BFQuizSuppressQuestion and BFQuizSuppressOptions.

3. Copy entire contents (except css folder if you've customised style) of
"admin" folder into /administrator/components/com_bfsurvey_pro/
(overwrite existing files)
If you don't replace style.css, manually add the two new styles BFSurveyProSuppressQuestion and BFSurveyProSuppressOptions from style.css file in zip (componet\CSS folder)

4. Copy com_bfsurvey_pro.xml into /administrator/components/com_bfsurvey_pro/
(overwrite existing file)

Please note: if you are upgrading from an older version than v1.3.0, please also run SQL commands in upgrade instructions for all version in between your current version and the new version (see documentation section of our website).