Thread: Nuvi 54LM: Shutdowns in ~2 secs after reflash

Have you looked @ this [Only registered and activated users can see links. ]

You must do this every time you flash firmware or perform Hard Reset Clear NVRam

Maybe your Unit ID has Changed Region 41 corrupt ?? (serious problem) CatyMag can Fix this
OR Maybe your GMA files are missing (Part of Map Update)

Can Nuvi be seen by Garmin Express ?

Have you done hard reset ? Clear Nonvol [Only registered and activated users can see links. ]

You can also try to flash Nuvi by SD Card

You need a different version GCD file (older or newer not same version) (Must be valid ORIGINAL (not patched) GCD file for your Nuvi)
Rename it as GUPDATE.GCD
Place it in clean SD CARD folder /garmin
Switch off Nuvi
Switch on Nuvi

It should flash.

After you flash GarminCure3
Switch off Nuvi
Connect USB Cable to Computer
Connect Nuvi to USB Cable.
The Nuvi Should do a partial Boot and Internal Drive Should be Visible.
If this does not happen Something is Wrong with the Nuvi.
Cure is used only to remove corrupt files which caused Nuvi to Not boot (Bricked) Your Nuvi is not actually bricked.