Universal Firmware Patcher for Protected Garmin Devices

would you be so kind to help me with a patch I have Garmin Nuvi 3790 HWID B1101-00, Firmware 5.10,Thanks

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The Nuvi 37xx, as I know doesn't need any patch. Simply use Unlocked Maps.

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I can not open the maps on SD card is there something else I should do ?

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What and where have you Put the Maps?
On microSD you should use:

1. gmapsupp.img in folder \Garmin
2. asyoulike.img in folder \Map

You should also be sure Maps are correctly Unlocked

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I have downloaded the unlocked maps " https://www.gpsurl.com/garmin-maps/244458-city-navigator-europe-ntu-2019-20-a-6.html" and placed them
gmapsupp.img in folder \Garmin
gmap3d in folder \Garmin
gmapprom.img in folder \Map

I can see the maps on SD card with Base Camp

Few things to check:

Is your new map showed by settings/mapinfo?
If yes: did you select it and untick the old one.
Does the Garmin support the capacity of the sd card you are using?

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The link you mentioned talk about this:

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Are you sure the Map is properly Unlocked?
Basecamp read the Map anyway, wether it is Locked or not.

Files placed directly to navigation , everything works fine. Thanks

Dear @FireFox58

Thank you for your appreciated contribution and very helpful guidance.

Please I have Garmin DriveAssist 51 LMT-S

My problem I can not get into Pre-boot mode

I tried many time hold my thumb on left upper corner but nothing happened

Also I tried this way but I'm not sure if I apply it correctly:
Models nuvi: DriveAssist 50 (could also apply to Drive & DriveSmart)
1. Turn off the device
2. Power on [preferably by making USB connection to PC]
3. When GARMIN logo appears quickly press above and between letters G and A:

I don't know the exact area " above and between letters G and A "

Please help me with that



I need to unlock my Garmin DriveAssist 51 LMT-S:

<PartNumber>006-B2590-00<
<SoftwareVersion>440<
<Description>Garmin DriveAssist 51<

I need to get the loader to flash the .gcd file

Kind regards,

Alex