On 08/11/2011 12:26 PM, Xiaofan Chen wrote: >=20 > I remember that MPLAB ICD 3 and Real ICE should be able to support > this use case. When the bulk erase is not possible, they should > be able to try row erase. Please go to Microchip Support and > raise a ticket. > http://support.microchip.com A ticket has been raised, but I'm not sure you can access it: http://www.microchip.com/support/IndividualTicket.aspx?TicketNo=3D211790&p= =3D0 And this is more or less what Microchip support says: "The Bulk Erase requirement is a limitation of the chip and NOT of the Programmer. The Programming specification requires a Voltage of min. 2.7V for the Bulk Erase." >=20 >> >> The help inside MPLAB seems to suggest that Microchip MPLAB >> ICD2, ICD 3, Real ICE and PICkit 3 do not support LVP inside MPLAB >> and they recommend to use PM3. PM3 will not help, since it's just for programming and not for debugging and we are fine with programming (once). Regards, Robert ....If it's there, and you can see it, it's real. - If it's not there, and you can see it, it's virtual.- If it's there, and you can't see it, it's transparent.- If it's not there, and you can't see it, you erased it. (from some mailing list) My public pgp key is available at: http://pgp.mit.edu:11371/pks/lookup?op=3Dget&search=3D0x90320BF1 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .