The process usually takes 2–3 minutes. Do not turn off the power during this time. The box will restart automatically when finished. Method 2: Forced Recovery (For "Boot Loop" Issues) If your box won't turn on or is stuck on a logo:
Power supply insufficient or firmware memory leak. Fix: Replace the 5V power adapter with a higher quality 5V/1.5A unit. Re-flash a different dated firmware (e.g., from 2022 instead of 2023). 1509 dvbt2 512m firmware update
Ensure your power connection is stable during the flash process. The process usually takes 2–3 minutes
For advanced users, you may need to use an RS232 cable and a "Sunplus Loader" tool on a PC, or a CH341A programmer to write the software directly to the flash chip. Summary Checklist Match the RAM: Ensure the file says 512M . Method 2: Forced Recovery (For "Boot Loop" Issues)