Apparently, there are currently really four (4) EE versions of 6.19 to 6.22 i.e. your A,B,C & D as defined below
The following changes were made in the most recent update:-
- DTV2 added
- P-DTV2 added
- L-DTV2 added
- A-DTV2 added
- REC LOCK removed
- REC UNLOCK removed
To update a Beo4 remote control produced before September, 2007, then the kit will contain a new keypad (with V.MEM, A.MEM and DTV)
along with the PCB with EE version 6.22
To update a Beo4 remote control after September, 2007, the kit is just the PCB with EE version 6.22,
These EE eprom versions still work and are compatible with software version is 5.00.
There are 4 different EE versions, as the EE version determines what is put in the LIST button from the factory.
EE versions are:
Video1/Audio1: 6.19
Video2/Audio1: 6.20
Video3/Audio2: 6.21
Video4/Audio1: 6.22
The possible configurations which were implemented some years ago, I think around 2002 were Video 1, 2 or 3 and Audio 1 and 2 and the following were what was implemented
Video1: Avant chassis and MX 4/6/7000
Video2: BV/BC 1 MX 8000
Video3: USA
Audio1: Basic
Audio2: BS9000