How to upgrade the DSP amplifier when software booting

Regards to the upgrade of DSP amplifier:

1. Please install this software on your latop
   DfuSe_Demo_V3.0.5_Setup.exe

2. Please save these two programs on your latop

   1  DSP_FAN4X4S_021e_20211014.dfu (load this file firstly)

   2  F4X4Series_4X4BTL_V4.3.3_012e_APF_Net_20240315_pol.dfu

3. Please follow the video：

   
   

   
   

Here are the steps to upgrade the program:

1. Connect the USB cable to the computer without turning it on.

2. Open the upgrade software program (DfuSe_Demo_V3.0.5_Setup.exe)  installed on your computer

3. Press and hold the "INPUT A" button and turn on the amplifier in the meatime, and release the button after five seconds.

4. At this time, the DSP board can be recognized by the computer upgrade software.

5. Follow the steps in the upgrade software, load program 1 and click "upgrade".

6. After load successfully, turn off the amplifier for 10 seconds and then turn on.  And wait 15 for seconds, and then turn off the amplifier..

7. Repeat steps 3 to 5 above, this time loading program 2.

8. After load successfully, turn off the amplifier for 10 seconds and then turn on.  And wait 15 for seconds, and then turn off the amplifier..

9. Turn it on again after 10 seconds to test whether it is normal.