Use a FAT32-formatted USB drive. It is recommended to keep only the firmware file in the root directory to avoid errors. Standard USB Update Procedure
There are two primary methods for updating the firmware on these devices: 1509 dvbt2 512m firmware update top
This complete technical guide covers what this specific firmware setup entails, why you need to update it, and how to perform a safe installation via USB. What is the 1509 DVB-T2 512M Hardware Specification? Use a FAT32-formatted USB drive