> I'm leaning towards the silicon issue, unless anyone comes up > with any other ideas I've compared the _JTAGEN_OFF and _JTAGEN_ON hex files, as created by MPLAB without my manual change, and they have the same checksum I'm using 8.30.00.00 MPLAB. The ASM30 is what came with it. Looked for an 'About' to get the version, possibly 3.12 pic30-as.exe v3.12, pic30-ld.exe v3.12, pic30-ar.exe v3.12 Joe * * ********** Quality PIC programmers http://www.embedinc.com/products/index.htm --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .