I've tried to update my 906 using this guide but seem to be running into some roadblocks.
I got mine when they first came out so I'm guessing that my firmware and DSP is in need of updating although I don't have a old laptop with a coms port so tried using a USB to RS232 hoping that I have a cable that works.
To start with I tried doing the update with windows 7 as this picked up and installed the driver I then went into device manager and set all the settings (COM1 and 9600) then installed VB6 then went onto the update. After setting the amp to update mode and checking the settings on the updater all was correct then I clicked update firmware the amp changes from update to search f/w... the updater has no log when the box is ticked and the speed changes to 38600 I have left this for 10 mins but nothing happens.
So I had an old HDD laying around and installed Win XP as this is the OS other people on this forum have said works when using the updater done all of the above again and am still getting the same result.
Is this the error that other people have been getting when using a USB to RS232???
If this is the case then I will need to dig out my coms adaptor for my motherboard and buy a RS232 to RS232 cable I looked on eBay and can get a 10m for under a £5 as my PC is located in another room to do the update.
Any help would be great if I've missed something. I know these cables can be hit or miss but no one has said about there's saying search f/w...
Thanks in advance for any advice but I'm sure the answer is gonna be buy the cable and dig out the port adaptor just means installing XP onto my main PC to carry out the update on the spare HDD of course.

Looks like everything on mine is in need of updating with every version being behind.
Did you get your CD yet for the DSP update and is this the one that fix's the DTS bomb on Star Wars if so would you be able to make an ISO of the disk and post it if possible.
I'm hoping that with this unit being a 906 I don't have to be on 1.01 to perform the updates as this seems to come up when people are talking about upgrading the 905.
I did also see that you posted about a jig but again your F/W was 1.01 so everything went smoothly for you.
Thanks.