Covers Nvidia Shield, Mi Box, Xiaomi TV boxes, and the dozens of generic Android TV sticks and boxes that all run the same underlying OS.
Method A (Downloader) is quicker. Method B (USB drive) is worth knowing if your box has no browser or app store installed yet.
Settings → Apps → Special app access → Install unknown apps → select Downloader → toggle "Allow from this source."
Search for it directly, or use your box's default app store.
Open Downloader and type the code into the address bar, then select Go.
Confirm the install prompt, then open it from your home screen or app drawer.
Grab it from our download page and save it to a USB flash drive.
Most boxes have at least one full-size USB port.
If your box doesn't have one built in, install "File Manager" or similar from the Play Store first.
Select the Aptoide TV file to begin installation.
You may need to grant your file manager permission the first time.
It'll appear in your apps list from now on, same as any other installed app.
Generic Android TV boxes vary a lot in their settings menu wording. If "Special app access" isn't where you expect it, search your Settings app for "unknown sources" or "install unknown apps."
Aptoide