A complete firmware package for the SM-A315N typically contains five specific binary files used during the flashing process:

The is the official system software specifically designed for the South Korean variant of the Galaxy A31. Flashing this official stock ROM allows you to restore the device to its factory state, resolve critical software issues, and ensure the phone remains on the official update path. Key Features and Use Cases

Resolves persistent lag, application crashes, or storage-related performance issues.