If you attach a powered USB hub to the Zero you could copy the file from your PC onto a USB stick, remove it from the PC and then plug it into the USB port on the powered hub.
There are also USB hubs with integrated LAN ports available very cheaply now - saves you the hassle of buying an additional wifi or ethernet dongle and you probably need a USB hub anyway with the zero if you want to use keyboard, gamepads, USB HDDs/pendrives/... with it.
so long,
Hias
There’s no confusion. Get a USB hub so you can plug a USB stick into the RPI Zero. You’ve only one USB port Simple solution.
You can download the add-on zips (and dependencies) from the repo, but the repo webserver deliberately blocks "browsing" from non-LibreELEC devices so you cannot browse from a laptop browser unless you fake the browser user-agent. TL/DR; get a USB hub and WiFi dongle and do it from the GUI 'normally' because it's the easy way.
Solution: Either buy a Powered USB box or have Wi-fi built in; Whatever you do avoid the raspberry Pi Zero Non-W.
I don't know where you got 'Powered USB box' from. If your case gives you access to the Pi Zero's Micro USB port, and the power solution for the case is suitable, then you can use a cheap, non-powered USB hub with integrated Ethernet, such as this :
Or you can use a Micro USB to USB-A dongle like the one supplied with this kit to allow you to connect a WiFi dongle alone :
Both are bits of kit I have in my 'useful dongles' box at home for getting non-W Pi Zeros set-up and configured.
We don't support this hardware officially due to the lack of RAM. However, this thread might help you out.
