Re: Where do I connect to the board?
- From: Stefan Reuther <stefan.news@xxxxxxxx>
- Date: Fri, 09 Nov 2007 19:15:27 +0100
steff_dk wrote:
Even if you could, they've probably set some protections bits which will
prevent you from downloading the code into Crossworks. You probably have to
erase the entire chip too first before you can program it again.
Well, I do have the firmware running on it now, on a CD as well.
Maybe a more suitable solution is to change the firmware and then flash
it.
If this were a device I made the bootloader for, all you would have now
would be a CD full of seemingly random bytes, which would also be
protected against tampering by several checksums. Checksums are required
to detect failed updates or otherwise broken flashes, and encryption
came as a useful side-effect to compression.
Does anyone know if the firmware is manipulated during install, or if it
is just copied directly from the cd to flash memory in this process?
The manufacturer of your device knows. I would consider a unverified 1:1
copy rather unusual. The minimum is some checksum and control (=which
device is this firmware for, at what address in the flash does it go,
etc.) headers.
Okay, you *may* be lucky and find the strings somewhere, but if you have
to ask where to connect, you still have some way to go :-)
Stefan
.
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