Never mind - I've just discovered that there's a compatibility issue between MPLAB v5.50 and the Picstart v3.11 firmware. Time to download a new MPLAB, I guess. RR ----- Original Message ----- From: "Rob Robson" To: "pic microcontroller discussion list" Sent: Wednesday, May 11, 2005 3:00 PM Subject: [PIC] Picstart upgrade problems > In order to get my 3-year-old Picstart Plus to program an 18F452, I've > obtained a new 17C44 (instead of the more expensive PUM) and programmed it > with the last (v3.11) firmware upgrade, which I downloaded from Microchip. > I confirmed the 17C44 was blank beforehand, and verified its contents > after programming. After installing the new 17C44 as per Microchip's > instructions, the Picstart reports the new version when Enable Programmer > is clicked in MPLAB (v5.50), but MPLAB still reports the old Picstart > firmware version in Help...About. MPLAB also still gives me the > "Unsupported Device" error when I try to enable the programmer with an > 18F452 project open. How do I "tell" MPLAB 5.50 (which has always listed > the 18F452 as a supported device) that the Picstart is running new > firmware? I can't find this info on Microchip's site. > > Sorry for the long post...just trying to be clear and thorough. > > Thanks, > RR > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist