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How would you decode firmware in .WAV format?

Started by Coldblackice, May 20, 2014, 05:20:00 PM

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Coldblackice

I have a Yamaha receiver that I'm wanting to modify, particularly replacing some of the onscreen graphics that it paints onto my TV whenever I change volume on the receiver.

However, the official firmware by Yamaha is released in .WAV format (thus the update process must be done via a burned audio CD or streamed over an optical connection to the receiver).

Anyone have any insight on how I might go about modifying this? Of course, I assume the first step is translating the WAV to its "real" format, like a bin or rom. But I don't know how you'd go about doing that.

BenYeeHua

It look interesting, but too bad I don't has the skill to help here...

Jeremy Collake

As you surmise, it'd be a matter of decoding the WAV update file to it's original binary format.

Then, you'd modify it.

Then, re-encode to WAV format.

Far too much work, time, and effort for any reasonable person I think ;p.
Software Engineer. Bitsum LLC.

Coldblackice

Gotcha, thanks both.

Any suggestion as far as forums/irc/groups that might be able to? (or that I could ask for help)

Jeremy Collake

None I know of.

Good luck on luring a developer with the necessary skillset, and/or getting it done yourself.
Software Engineer. Bitsum LLC.