Customized PICKit can't write data in PIC12F629
I went to company support divition and they told me this kind of pickit 2 clone have some issue with OSCAL value,if it change it to unsupported or out of range value, your chip , in this programmer is doomed , you should get another chip, spacially in 12Fxx series.

They gave me another simpler  programmer which is cloned from banner8(German made programmer) to solve the OSCAL problem , it is fine but it is not PICKIT 2.