Purchased this Bushnell neo+ mod. 36 8150 on eBay. It was sold as a demo unit, no return. I took a chance on it. I received it in a unopened original Bushnell shrink rapped box. Registered and sync'd the unit on iGolf. Everything works except it doesn’t display any yardage. I contacted both iGolf and Bushnell support, both said in essence that a demo unit won't work, although I have seen factory demo's being sold on various websites. 1 tech. @ IGolf uploaded to me 2 files EMBEDD01.GLF and SYSREG.SMI which I loaded on to my neo+ after deleting both of the 2 files with the same name originally on the unit. there are 3 files on the unit. EMBEDD01.glf 93,233 kb, SYSREG.SMI 1 kb, and SETUP.SMI 1 kb. But again, everything works, satellite signal strong, courses are loaded but no yardage is shown. It seemed to be working when I tried to map a hole on the course (front, center, and back) but on resume play the hole shows no yardage. I believe it's the firmware that is in this demo unit. My ? to iGolf and Bushnell support was is there an update to the firmware. Either download or purchase, but neither gave me an answer. Anyone out there have an answer.