Use a FAT32-formatted USB 2.0 or 3.0 flash drive.
Fixes frustrating delays where the audio track does not align with the mouth movements on screen. 1509 Dvb-t2 512m Firmware Update
Updating your 1509 DVB-T2 512M firmware is a straightforward process. Here's a step-by-step guide: Use a FAT32-formatted USB 2