Upgrading firmware USB dongle EC200A-EU

Hi, I just flash my EC200A-EU usb module with provided QFlash tools and Firmware. But I don’t know what to next. Can someone guide me?

After the process completed my usb EC200A-EU keep disconnect and reconnect to my windows PC. Reflashing with the same firmware result the same outcome.

Can someone please help? I’m using this firmware;

and my usb EC200A-EU looks like this;

Hello! This is OEM dongle. If you have a problem with disconnect, please, make sure that the USB port can give 5V/1A


Could you solve this? I’m having the same problem, but not with a dongle, with my own hardware.