Thread: Turn your Nuvi 510 into a Zumo 220

Originally Posted by dasilvarsa

If you can still get pre_boot mode maybe you could try this.
I'm not sure if it's been tested with 510.

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That is the problem. I can get into pre_boot (touching the screen left top and pressing the power button) then the screen gets white and there are 2 lines, a dot and instructions to press the dot. After that the device goes to Loader Loading again....