Smile, Import Custom Entity
This module add the ability to import Custom Entities
download csv example in magento import panel
default folder for images : pub/media/import
images will be placed in : pub/media/scoped_eav/entity
if you put images_url in your csv file it will be download and place in destination folder
Find csv templates in : files/sample
When magento will support csv sample i will update the module and make csv template available in admin panel