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Subject: RE: Rockbox and the Cowon D20

RE: Rockbox and the Cowon D20

From: Mike Giacomelli <>
Date: Thu, 5 Sep 2013 09:34:43 -0700

> I know the types of all major chips on the board and have some datasheets.
> But where do i start? Which is the most painless path to take?
> And how do i recover from bricking the device?

This message has instructions for uploading new firmware to RAM over USB on the TCC7901:

I would start with tcctool as it should enable you to experiment with code on the device without risking any damage to it. Once that is working, I would start on writing basic drivers (or adapting existing TCC drivers from other devices) for things like display, buttons, storage.

That said, I haven't worked on any TCC devices, so perhaps someone here can give you more specific advice.

Received on 2013-09-05

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