As of May 2026, Sony no longer provides technical support, updates, or direct download links for its desktop e-reading software.

Existing installations will continue to work, but you cannot download a fresh copy from Sony if you switch to a new computer.

Reliable copies of the final installers (ReaderInstaller.exe for PC and ReaderInstaller.dmg for Mac) are hosted on the Internet Archive .

Sony has officially as of March 31, 2023 . While the software is no longer available on official Sony support websites, users of legacy PRS-series devices can still manage their libraries through alternative methods or archived installers. Current Status of Sony Reader Software

Since the official software is deprecated, most Sony Reader enthusiasts have migrated to modern, open-source solutions: Reader for Mac | Sony USA

For certain models like the PRS-T1 , you can sometimes find the "Setup Reader for PC/Mac" installer files directly on the device's internal memory when connected via USB in "Data Transfer Mode".

The Mac version is incompatible with Apple Silicon (M1/M2/M3) chips and requires an older Intel-based Mac to run. How to Download and Install (Legacy Methods)