JDM programmer Mod

I have a JDM type programmer, and did a "NO NO!" with a pic12f629 chip ( int osc / mclr off )! I can see that the code is trying to run whin I place a chip into the programmer. (dim flashing led ) The Chip will not erase now.

I now know that I must turn on vpp before vdd. Witch a JDM programmer cannot do without mods.

I thinking that the mod in the attach should work !

Is it worth a shot ?
thanks,
steve

I'd like to know if it is necessary to modify JDM programmer to programme 16F628. If so can some one send me the modification details.
You may use my email:h.thilak@gmail.com
Tks.
Thilak

I'd like someone help me with the followings.
1. Will I be able to us the JDM programmer to program the PIC12F683.
2. Is there a new version of this which contain PIC12F683, as the one I have does NOT.

how can program min. 5 pic microcontrller with JDM programmer