Need help from you guys how to program Pic 12C509A using icprog!

[jfar22]

Hi guys! Ive successfully burn my pic 12C509A using software like PICprog4u and the schematic jdm like modified by Radu Igret. Then i build this programmer which limited only for 18 pins PIC. Worry no more co'z the osscal value automatically inserted using that software which i didn't find in icprog. My cost for building this programmer is only $2.50. Thank You!

[Art]

Nice, but the JDM programmer only works if your PC has a real serial port, or you power it externally.
12C509 OTP only applies to setting individual bits, so as long as your programmer is NOT working,
you can try as many times as it takes to get it working AFAIK.