Hi,
I had the similar problem in LPC824M201JHI33.
Flash Magic version is 9.80 in current, but it was no problem in 9.51.
I generated debug file at "Display Memory" / "Blank Check".
I found no problem at "Read Device Signature" or "Read Security".
Error message was "Unable to communicate(Transmit / Receive)".
I send Debug File in reply.
gl_belre9
I had the similar problem in LPC824M201JHI33.
Flash Magic version is 9.80 in current, but it was no problem in 9.51.
I generated debug file at "Display Memory" / "Blank Check".
I found no problem at "Read Device Signature" or "Read Security".
Error message was "Unable to communicate(Transmit / Receive)".
I send Debug File in reply.
gl_belre9