hi roelofvk,
Yes exactly version 1.7 include the update to the revolution slider security issue too.
first of all download the zip theme(attitude-pro) and then first unzip the file and rename it(attitude-pro-v-1.7.0) rename it. After renaming it zip the file
Then go to dashboard-> appearance-> themes-> add new
and upload that zip theme. The same two theme will be shown there and preview the theme. You can find the new one with its latest version after clicking on Theme details.(You can identify it from the latest version). You latest version is 1.7
Then active the latest version.
Delete the old version of the theme.
Or simply you can delete the old theme and upload the zip file with latest version too and activate it. Then it works.
If you have not changed any code then nothing will be lost or if you have a child theme then no worry about loss of data but if you have customised any of the code then the customised code will be lost.
So we always recommended to take a backup of your theme and also the database to be safe from data loss.
Thank you!
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