Lenovo recently released a firmware update for their IX4-300d NAS to address critical security vulnerabilities that left many devices exposed to potential hacker attacks. While it’s highly recommended to apply this update to keep your system secure, users who rely on custom configurations—particularly those using custom startup scripts to run servers or applications—should proceed with caution. Updating the firmware can overwrite or disable these scripts, potentially breaking your setup and preventing essential services from starting automatically.
In this guide, I’ll walk you through the process of safely updating your NAS firmware while preserving your custom server functionality. We’ll back up key configuration files, reapply custom startup scripts post-update, and verify that everything runs smoothly. With the right steps, you can enjoy the latest security improvements without sacrificing the features and tweaks you’ve added to your system.