Which download do you mean?
An app package installs software. A movie download supplies an offline edition through a supported service. A Leonflix bookmark backup stores your shortlist and checkpoint references. These files serve different purposes. None becomes another just because its filename includes the brand or a movie title.
Offline movies
Check the viewing service for the specific film and device. Some offline editions remain inside that app and expire under its own rules. Check when the download must be watched and whether the device needs to reconnect before a journey. This catalog does not distribute video files or convert an online viewing option into a downloadable copy.
Your saved list
Create a backup in Bookmarks if you want to move your choices between browsers. Keep the complete text until the restored list has been checked. It does not contain video, and it will not make a bookmarked film play without a network connection. See the restore instructions for the supported workflow.
The desktop application
If you meant downloading the Leonflix program, read desktop package information. This site does not invent new releases, rename desktop files as Android packages or provide a replacement installer for an unsupported device. You can browse movies here while deciding whether you need any additional software.