On 26th March Clint Sharp wrote that he has found the psf410.hex. I am having similar problem. I am in India, and sending the unit to Microchip would be very expensive. I would appreciate ifany one can point me to the file, or email it to me. My address is satyadev DOT vyas AT gmail DOT com Thanks in advance. Satyadev Vyas -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist