Manual check for updates on Shield
Since there is no "Updates configuration" on Shield, you are not able to manually check and run updates (e.g. after initial setup).
There is also a possibility to add such button (check for updates) e.g. into reForis "header" so it would be easily accessible on all Turris devices. Currently, you need to go to updates settings and click on save and update to run manua "check for updates".
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information