I find the slow clock setting on a USBasp often does the trick whenever things get a bit stubborn. For $5 or so on ebay, I think one of these is a reasonable investment for anyone who does more than the most infrequent ICSP programming.
I find the slow clock setting on a USBasp often does the trick whenever things get a bit stubborn. For $5 or so on ebay, I think one of these is a reasonable investment for anyone who does more than the most infrequent ICSP programming.