An update: I can bulk erase code protected chips if I insert them into the ZIF socket on the PICSTART. So now my problem is still with doing a bulk erase via ICSP. My question is now: Why do I have problems doing a bulk erase via ICSP, when I have no problem programming via ICSP? Alan -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body