I had the same problem, and in the latest AEM 6.3 there is no Version menu options in CRX. So I found a solution to set jcr:isCheckedOut from false to true in Touch UI, by simply go to the site console, select the page, and in the left command panel, create a new version. This will then make the cur...

Note that this solution is not working in AEM 6.3. Impersonated sessions will no be able to do unlocking.