I am sorry, I not understand what you mean. Please send more details.
You have Developer access, so you have access to all our last Joomla extensions.
Before making any upgrades, make backup yours site( files and DataBase). With that you will not lost something important !!!!!!
At first please check upgrade/update process at the test website!
Jooma Templates - you can't update
For Update Joomla Templates you need:
- Update all modules and components
- Update Joomla
For components or modules update - you need install on your site new versions of component or module.
If you have custom changes of component or site, you can lose your changes.
Please, in that case do not make update.
AND BACKUP first !!!!!!