gnav10 help

[willow72]

wondered if you could help me i recently bought a gnave 10 i installed the destinator op software disks onto my pc and it had down graded the software on my gnav the software that was on my gnav was (v 5.1.174) it is now (v 5.1.145) i have phone goodmans they told me if i send them my sd card they would update the maps on it but they want update the software on the gnav or send me up to date disks for it i have spent the last 2 days looking on the net for updates and on phone to goodmans if there is any possible help you can give me it will be very much appreciated thanx

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