Using http://psndl.net/packages/install is relatively straightforward. Here are the general steps:
Since you cannot use the original PSNDL site, the general method for installing .pkg files involves:
To help you get your network installation running perfectly, tell me:
Full system modification available for older Fat and Slim PS3 models.
A homebrew tool like or Package Linker installed on the console. Step 1: Set Up the HTTP Server on Your PC
If you are looking to install packages, here is the current state of affairs and how it typically works for different consoles: Status of PSNDL
Ensure your PC has a static IP address. Input this IP address into your PS3's webMAN MOD setup configuration.
Here are some common apt commands:
Disclaimer: Modifying console firmware and installing packages from unofficial sources carries inherent risks, including potential console bans from online networks or data corruption. Ensure you backup critical system data before proceeding.