→ progress bar (0–100%). Do not power off during this (5–10 minutes).
Firmware files for this specific model (1509 DVB-T2 512M) are often hosted on Google Drive or provided by manufacturers like File Format: 1509 dvbt2 512m firmware update top
Enhancements to tuner sensitivity for better signal reception. → progress bar (0–100%)
: Check the underside of your unit for a 15-digit serial. Firmware for newer units (e.g., those with serials larger than 180818) often differs from older ones. 1509 dvbt2 512m firmware update top
Use the original 12V 1A power adapter. A weak adapter during the 2-minute update will corrupt the flash.