: You can treat the device as a standard USB drive. Once connected, you can manually drag and drop compatible eBook files into the appropriate folders on the internal storage. Troubleshooting and Resets
Reconnect to the computer and delete the "sony reader" folder from the internal memory.
If you have obtained a firmware folder (often named "sony reader"), users in community forums like MobileRead suggest this manual reinstallation process: Connect the PRS-300 to your computer via USB.
Since official software is discontinued, modern users typically rely on these alternatives to manage books and firmware:
Follow the prompts (typically pressing "6" to flash and "9" to restart once finished).
: This open-source software is widely recommended for the PRS-300. It allows you to transfer books, manage your library, and convert file formats (like PDF to EPUB) specifically for the device's 5-inch screen.
: Press the RESET button on the bottom edge using a paper clip.
