[BRLTTY] Optelec BC640 - firmware 2.2.4

[L]

Hello,

i'm gonna receive here a BC640, including the audiopack, for testing with
brltty:

- do I need a more recent brltty version than the one provided with Debian
  Lenny or Ubuntu Hardy ?
- does the built-in kbd works with brltty ?

The Optelec will be shipped with the new 2.2.4 firmware who is supposed
fixing the compatibility-problem with Linux as they use to say...

Thanx in advance for further info,

Labrador