Hi,
Before update make full backup (file+database), you can use Akeebabackup

1. If you have page builder older then 2.5.4, install this version 2.5.4 and clean cache.
2. Update Joomla clean cache
3. Install both plugins and clean cache
4. Install Layer Slider and other extensions if you need.
5. Make backup

Note:
We added in our pack Sp page builder version 3, version 3 is made from 0 so will have some issues, our advise is to wait until they release other version like 3.1, but if you want to try, you can install copy of your site, under subdomain like:test.yoursite.com and install there, If all are ok, you can use it, but is better to wait.

Layer Slider and Sp page builder will ask you licence to add for automatic update, Because both are premium extensions, we can't provide key for automatic update.
Updates will be made only by installation manually from folder Updates or in Extensions, so you can ask to us new version or download again pack from themeforest, in your account.

Best regards,
Joomlastars Team


