To download a file, esp. an application, to a smartphone or other electronic device outside of the accepted or usual channels.
The app center says the eBay app isn't available yet for the new OS on my phone, so I had to sideload an earlier version from a Dropbox link I found.
od uživatele Eduardo Suave 06. Září 2011
2 more definitions
To upload or download information from the side of a PC, usually through a USB port.
I'm sideloading the music to my Zune
od uživatele Jerse47 01. Březen 2009
To transfer content from one device to another, within a range of permitted devices. Often you need to do this within a certain time frame
If you haven't got time to watch that movie on your PS3 then just sideload it to your PSP and watch it on the train
od uživatele DJDK 01. Srpen 2011