: Following the relaxation of export regulations in 2002, this version includes the complete source for handling encrypted archives. AtheOS Port : Added support for the AtheOS operating system.

If your package manager only offers version 6.0 and you specifically need 5.52, you will likely need to compile it manually. UnZip-5.52 - Linux From Scratch!

Because UnZip 5.52 is an older release (originally from 2005), it is rarely found in the main repositories of current Linux distributions like Ubuntu 24.04 or Fedora 40. Instead, you can download the source code or binaries from trusted archives:

: Oracle provides a specific version of unzip 5.52 for Enterprise Linux 4 and 5 that fixes issues with files larger than 4GB. Key Features of Version 5.52