Hi all,

I had a problem recently where a project is in use by some clients but
I had to rewrite the boot loader to make a new feature available.

In the past I have had to write some temporary boot code to rewrite
the entire chip including the new boot code.

It never occurred to me that a boot loader can rewrite over the top of
itself. To save myself a lot of code fuss, I tried this approach and
it works fine.

The only caveat is that the new boot code must not modify (or very
carefully modify) any of the code target addresses that reside inside
the operating part of the boot code.

Probably old news to some, but it saved me a lot of work.

cheers

Tony
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