Programming error: cannot start my AT9263 board anymore

[severin]

Hi all,

I just began working on my AT9263 board recently, and it seems that the first programming using SAM-BA (and RS232) went wrong: My board doesn't boot properly anymore, and SAM-BA doesn't detect it neither. I bought the SAM-ICE programming tool to check if that could help, but apparently no. I get the errors:

Could not find supported CPU on the JTAG chain

or

No valid processor ID found

when starting SAM-BA.

I guess I might have a big mess in the memory of my board now. Is there any way to reset it, and to erase the memory content?
I there anything I can do?

[esky-sh]

please check if ISP related signals connected to appropriate level.

[severin]

They should be at the right level, as I saw the processor on the SAM-BA chain before this bad programming occurred.
I also use a standard JTAG SAM-ICE or RS232 serial interface to program the board.