Hi, I am also an user of the Maestro 4245. Unfortunately I've lost an original ROM and whole system. The unit works with a ROM of the Maestro 4250 but it doesn't wont to update system by Magellan's update program. I can only manually write some programs to TFAT disk and use them. Fortunately i can install MioPocket and use IGO. My question is - does anybody have the genuine Magellan's update software for Maestro 4245 or could make a backup of ROM and Flash of the unit and put in to the Internet or send to me?
Did you solve the problem? I have same problem with my 4245 :(