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  1. #1081
    Super Member Butters's Avatar
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    Might be hard to locate such an old version as V4.50. Earliest on the Perry site is V4.80 as nuvi37xx_GCDFile__480.GCD:
    Code:
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    You can convert it to an RGN file with RGN_Tool of course.

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  3. #1082
    Member lacika640301's Avatar
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    Back to convert to 3790? Do you have a description for it? You do not want to succeed under # 1.

  4. #1083
    Super Member Butters's Avatar
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    OK, I think I now understand what you were wanting. There's no reason to use an old firmware version to do the re-conversion 34xx > 37xx. Use the latest V5.10 GCD from the perry link above, or get it direct from Garmin:
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    Convert the GCD to an RGN with RGN_Tool as detailed in the first post and then flash it in preboot mode using Updater.exe. You'll need to follow that tut in initial post, but as a guide. Re-load 37xx logo and files. Post again if unsure. May I ask why you want to convert it back, are you having satellite accuracy issues?

  5. #1084
    Member lacika640301's Avatar
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    Thanks. My boss will sell it, so I would go back to 3790. There is no problem with GPS accuracy. I tried to get back as described but did not go. Updater.exe will start, but the software will not run on your device.

  6. #1085
    Super Member Butters's Avatar
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    Quote Originally Posted by lacika640301 View Post
    .......... Updater.exe will start, but the software will not run on your device.
    Maybe your settings in Windows require such programs to be only run as admin. Right click Updater.exe and choose 'Run as Administrator'. Post a screenshot and more info if needed.

  7. #1086
    Member lacika640301's Avatar
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    In the meantime, I've been able to restore the software 3790, thanks for the help.

 

 
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