Is this part to extract or reverse the firmware where you fault appears to lie. You are not the only party who has experienced problems of this sort.
Glad you got it fixed. Yes, you should post the solution here for anyone in the future who it might help.
Issue fixed. Thanks to Rotel for providing additional firmware update methods!! I wonder what prompted that
Will update this to include step by step instructions for anyone who might encounter similar issues or bricked Rotel amp.