MMI Update Hicough

[sutherland]

I'm wondering if anyone can point me in the right direction with an MMI update gone a little wonky (2005 car). The car was on the oldest version, so I went through the gradual upgrades, not realising I could go straight from 2120 to 5570.

Anyway, during 5150 something went a wrong and it retried to write one of the modules several times before rebooting, so it seemed that one of the modules (can't remember which one) had just been skipped. I went on then to 5570 which went fine and everything works perfectly apart from the fact that the CD/Radio plays only on the left side, although the navigation instructions come from all round. I understand from reading around that my amplifier has probably gone into component protection, but I do not know if that is because of the 5150 blip or something unrelated.

The solutions I have read on-line vary: roll-back to an earlier version, try a newer navigation DVD, etc, but I cannot find a definitive answer. Does anyone have any advice on this? I don't want to fry my modules.

Thanks in advance.