Thread: Transform a Nuvi 37xx in a Nuvi 34xx for dummies

what i have to do with this file? (it is unpacked, have i copy the sd card root and start the garmin with this card, haven't i?)

RGN Tools:
1:rgn tool';s read me file said: "to start your GPS
in service/pre-boot mode" , i tried two different method (1., to hold the power button, and 2., touch the right bottom corner of the screen and hold the power) but nothing,

2: i backup the remote sw folder with two gcd files, it is ok????