pic programming?

i am not able to load the hex file to the pic that hex file i am trying to load had loaded sucsessfully before but now gives a verification error.
why is this happening and how to fix this?????

sort by: active | newest | oldest
Check your wiring, but suspect your chip is damaged.

robot1398 (author)  steveastrouk6 years ago
i tried with other chips but they too had the same error
Is your programmer OK ?

robot1398 (author)  steveastrouk6 years ago
yes my programmer is ok and the chip is programmed is programmed there was a problem with my programmming software i was using picgm but it gave a error but the same code with winpic could be programmed
Also, what chip/software/programmer are you using?

Do any of the lines to the programmer share pins with any other hardware plugged into the PIC, as this sometimes leads to bad reads.

Some programmers have a VPP first and/or an LVP option, which sometimes helps if it is enabled.