[BRLTTY] Next release. (fwd)

[高生旺]

> Again, I'm seeing that the USB connection drops as soon as a routing key is
> pressed. I know this used to be a problem with earlier firmware but doesn't
> seem to be a problem with newer firmware. Please check if you can upgrade the
> firmware of your device to see if it's still a problem.
There is a new firmware file 3.0.4.fdu on official web site but no any 
documents so I don't know how to upgrade. Do you or any one know how to 
use this file? Thank you!