On an android box:

Go to apps - apkinstaller or appinstaller

Some boxes don't have an apkinstaller but use a file manager instead. Open your file explorer

Choose your usb-stick and start installing all the downloaded apps one by one. No need to open them yet. Just press done when installation complete.

CONTINUE TO PART 2A

 

On an Android TV

Go to your appstore on the tv.

Search for X-plore (see also our webpage) and install it

Open X-plore - Usb-stick in the tv

Go to the Usb stick in X-plore and click the downloaded apps. Install them but no need to open yet. 

CONTINU TO PART 3