I completed my firmware update last week, and although it is completed, and sounds great, there were some issues.  During the update there was a loss of connection, and I had to switch interfaces to the Midi Sport UNO, and the Monkey kept recognizing my 2-12 as a 1-12, and trying to load wrong firmware. Each time that I selected to change devices, it kept selecting DT -50 1—12.  Anyway, I manually performed the update after downloading the 2-12 firmware, but I'm wondering why there are different firmware updates for an amp that essentially is the same except for Speakers.  I know that the 2-12 does Have one different speaker than the 1-12, and the head/4-12 has 2 of that speaker, but that shouldn't require a different firmware set up,..(should it ?).  BTW, As far as the latest firmware,.. I don't remember the output mode always changing to Combo Power Amp when using L6 Link previously,and I don't like this feature.  I basically use 5 different preamps models, and prefer the sound when it set to Studio Output.