I made a copy of original files so i have back up but also on sd card i have route66 (was original map) files and shell i just deleted data files that held all route66 maps and replaced with iGO works fine apart from obvious problem. i will try unlock without Route66 files and shell and see if it works,if not work ill play around with deleting route66 files one at a time thanks for the idea. oh i used MioPocket 4.0 Release 68 to unlock
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