Werner Meier wrote:
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I'm not sure about the RB2, but I had strange problems with the CC01 using blocks of 128byte. According to Atmel support, I had to use 16byte blocks, then everything was fine.

Werner,
RB2 and RC2 have exactly the same bug and meanwhile I got some answer from Atmel.
Page Load with a size of 0x10 works perfectly.
Now I an able to update my code via USB. :-)

Thanks for your help.
Thomas