Mohit , Maybe you could tell us a little more about your "Wisp628". How is it built ? From a kit from Wouter ? Or from stuff you have digged up ? Anything else connected ? What level/voltage do you have on the MCLR pin after the programming (when it "hangs") ? Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist