Universal Firmware Patcher for Protected Garmin Devices

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This has been discussed elsewhere and reported working
<PartNumber>006-B3725-00</PartNumber>
<SoftwareVersion>460</SoftwareVersion
><Description>GPSMAP 65s</Description></Model>


Welcome to the forum.
The latest firmware available is 4.50 Garmin has advance what your device is displaying.
I suspect this is a newish purchase, Garmin has previously on other devices advanced the FW version to the next one in the garmindevice.xml so the current version 4.50 installed can't be over written/Patched.

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Using the two Patch tools we can advance the firmware version to 4.62 so WebUpdater will be able to update to the phantom 4.60

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Please use at your own risk, understanding I don't have this particular device to test myself, but others have and said

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Garmin_Nuvi Reviewed by Garmin_Nuvi on 17th May 2024. Universal Firmware Patcher for Protected Garmin Devices Universal Firmware Patcher for Protected Garmin Devices v.1.10 This is an universal firmware patcher for protected Garmin devices. Many devices recently have a strong firmware protection and cannot use unlocked maps because firmware requires .gma and has MSV ( Map Signature Verification). In this list (http://www78.zippyshare.com/v/CWAOqHso/file.html) you will be able to check if your device firmware requires this patcher or if it just needs gingunlock+mapsigpatch or simply an .unl file Rating: 5

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Right, both IMG & JNX tools used.
Remember to back up any JNX files you have on the device before using the Patch.