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

George, I love to have your gps for a trifle, but gotta be honest and recommend: have patience! Yes u can have bricked your device, most likely solution exists, but it will only happen if u can get in pre-boot and here the minimum detail will make the difference. A secret is the exact moment when you have to press the screen, in this case, when appears immediately the Garmin Logo, neither before nor after. You have done it? Of course have the positions possible, try them all, but always obeying the exact time, as mentioned. I've been through this scare, I almost had a heart attack lol, but after a few attempts (+-400) I managed to get in pre-boot. Try as much as possible, do not give up!