What is a .PKG file?
A .PKG file, when related to Symbian OS, is a configuration file used specifically for creating a Symbian OS installer, which is known as a .SIS file. This file is written in plain text and includes important details about how the installer should be built. For instance, it lists the languages the application supports, the name of the company that made the application, any other software that the application needs to work properly, which files should be included in the installation, and information about the digital signature.
To open and edit a .PKG file, you can use any basic text editor like Notepad on Windows or TextEdit on macOS. However, to use the information in the .PKG file to actually create a .SIS file, you would need specialized software such as CreateSIS or Easy SIS Creator. These programs read the .PKG file and assemble all the necessary components to build the .SIS file, which is the final installer for Symbian OS applications.
Symbian OS was once a popular operating system for mobile devices like smartphones and PDAs from brands like Nokia, Ericsson, and Motorola. However, it is no longer in active development, and the last device to use this operating system, the Nokia 808 PureView, was released in 2012. Today, you might come across .PKG files if you are dealing with older software for these devices, or if you are involved in developing or maintaining applications for Symbian OS.
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