ARCAM AVR600 Reliability Issues

I recently put my Arcam Avr 600 in my system--purchased it about two years ago, but was in process of moving and assembling new system--something is wrong when I change channels on the video and the unit needs to transition from 2.0 to 5.1---no audio-------I then need to grab remote, and change from analog to digital to get audio.
does ANYONE have any idea what is going on, and or a fix? Not sure what to do---thoughts? thanks-

Google the many post re: reliability issues with the AVR 600 FYI

Just one of many examples of this buggy and expensive AVR

" ... My new Arcam AVR600 has problems (e.g., HDMI lock-ups/handshakes, transient spikes, time delays between playing source material and amplification).

Arcam and the dealer attempted to install a firmware update on two occasions and were not successful. The second attempt went terribly wrong and further compromised the unit. Now Arcam is proposing to add an additional device to secure HDMI signals and restore the unit, followed by the proper firmware update.

I am hesitant to give them - and the AVR600 - a 3rd chance. The sound is amazing, but I've been dealing with these problems for about 5 weeks now.

AND

I was within hours of ordering an AVR 600 until I read this post. Does anyone know what percentage of these receivers are flawed??? Are they all flawed??? Has Arcam ben able to fix the problem by now???

We have sold 30+ of the 600,s from our store. I think I had 2 that I sold that needed updates. I don't believe I have had an issue with one in about 2 years. (Give or take) the new firmware seems to have resolved the early issues some people experienced. I had one myself and loved it. I never had any problems at all.

Have been advised by Arcam in UK that the AVR 600 is in need of several updates on firmware and hardware. Do not buy this unit until you have verified that it is ENTIRELY up to date.