How are software updates installed?
In: Technology
Typically, the software will periodically send a web request to an online server, which will send back a list of versions. If the version you have installed is different from the version the server sends back, the software will detect itself as outdated. What it does from there depends on the software, it might redirect you to reinstall the program, it might offer an automatic update system, etc… Generally the actual update installation process is simply deleting the old files and replacing them with the updated versions. This could mean a complete reinstallation, or just changing around one or two files that need to be updated.
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