Why did my ER330 go back to the original firmware version?

Since the chip of the ER330 needs to be updated, please follow the steps and update it, and the problem could be resolved.

1. Please use a USB flash drive smaller than  FAT 32 partition <= 32G to update the chipset.
2. Download the software and copy it  to the USB flash drive
https://drive.google.com/drive/folders/14bBUFaY1G8V9rkAiZogo_s_73atFjBWS?usp=sharing

3. Insert the USB disk into the ER330, restart the ER330, and wait until the boot is complete. (Blue light flash -> solid blue)* Don’t need to connect an input source
My installation video, you can refer to
https://www.youtube.com/watch?v=BRPHq2dqcWo

4. Turn off the ER330, take out the USB disk, restart the ER330, go to “setting”->”Product Information”, you can see the version number of the bootloader behind the MCU version (b1.1.8.13)



​5. Product information on ER330:
Note: Please remove the boot file after you complete update, so it avoid using this disk to update flash repeatedly and resulting in the risk of flash write corruption.


6. Reinstall firmware 
https://storage.avermedia.com/web_release_www/software/ER330_FW_1.1.9.2.zip