More information. These are the instructions to update the Joyeauto device:
1. Plug the box into the USB port of the computer or 5V charger, and wait 1 minute for the box to power on and run.
2. Insert the USB disk (USB disk file system FAT32) with the upgrade file into the USB port of the USB Dongle
3. The box will start to upgrade, the red and green (or red and blue) indicator lights of the box will flash alternately during the upgrade process. (This upgrade process may take longer or shorter times, and it is recommended to keep this process for 3 minutes)
4. When the red, green (or red and blue) indicator lights of the box no longer flash, it means the upgrade is complete. You can unplug the USB disk (NOT USB Dongle) at this time and wait for 1 minute. During this period, you should see the red power supply of the box has gone out for more than 10 minutes. Lights up again in about seconds
5. The upgrade is complete, at this time you can unplug the box and plug it into the car for use
As you can see, it is the same procedure as our devices. They have also sent me the latest firmware according to them. It is a file called "USB Dongle Update.img" of size 7.7MB. I'm waiting for the version to be confirmed.
Could our devices be updated with this file? Only for very, very brave.