Smart Gallery makes it easier for content management and uploading.
Use Smart Gallery to download IC7.8 and CC3.3 resource packs in reliable manner.
Workflow (1) If Smart Gallery is not installed: https://youtu.be/ihdLWzpOvdA
Workflow (2) If Smart Gallery is already installed.
a. Double-click any Free item in Content Manager to activate the download process for all of the the resource packs.
or
b. Double-click any item in Smart Gallery > Pack > Free Resource to start the download process.