Posted 4/25/2021 17:25 (#8972545 - in reply to #8972513) Subject: RE: fm750
west central Iowa
I have a couple 750’s and don’t remember a passcode. Find an Internet site and it will tell you to upgrade in steps and it should give you the intermediate firmware versions to step to.
Copy any 750 or Nav II configs before you update. Then reinstall them when done. 750 and Nav II configs are not accessed from same screen.
fm750
