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

@ReorgeRace
If you are still unsure if it's flashed as 37 or 34 and having trouble reaching pre-boot, do this: Use your thumb to hold both on and over the letter G at same time. 37xx enters pre-boot holding a bit over the G and 34xx is more on the G as advised by Loly and Angelo.

Thanks to all for all the suggestions. Nothing works! When I turn it on with the switch, put it in the car, or simply plug the cord into my USB port, I get exactly the same reaction.

When I had the very dim screen with no logo, I got to the pre-boot by pressing in the upper left corner. I then flashed the 37XX logo back and that is when everything quit working. So I am guessing what I am seeing is the 37XX logo on the screen. It does not matter where I press on the screen, it just sits there and does nothing.

I feel this is the end of the road for the nuvi. Is a hard way to learn a lesson and I do appreciate all the suggestions and advice. If nothing else I have learned that no matter how careful you are, you can still make errors in following others instructions. Maybe it is just me, but there are differences in how the process of flashing is described between presenters. The "nuvi" talk is sometimes difficult to understand and translate into action correctly.

At this point in time, I really don't think there is anything else that can be done to restore my nuvi to any kind of operation. I has become a very expensive paper weight, but I guess you can't win them all. Again my thanks to all for trying,

Eventually it will end up on eBay for a very reasonable price, lifetime updates, accessories, and all. No reasonable offer will be refused! If any of you are interested, make me an offer that I can't refuse.

George

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!

I second Angelo's encouragement to keep trying. I too have been in this predicament more than once and ready to throw a nuvi at the wall. As Angelo said, the timing is imperative, you must press immediately the logo appears.

Here are some other tips:

Make sure you have updater.exe open on your desktop with the .rgn file ready to flash, and the dot entered beside 'USB device'. When loader appears, press OK immediately.

Plug the usb into a REAR port of your PC, have your thumb hovering over the screen ready to pounce, plug the microUSB into the nuvi and the instant the logo appears immediately press down hard with your thumb covering the G and a little above it as well using the whole of the pad of your thumb, not just the tip. If 'Loader' does not immediately appear in the top part of the screen, you've missed it. Hold the power switch down for at least 10 seconds before you try again.

Just keep trying. We've all been thru this. If your nuvi powers on as far as the logo it can go into pre-boot. If it can go to pre-boot it can be recovered. I once wasted half a day to get into preboot to cure a badly bricked 3790. That was one of most frustrating days of my life but after dozens, probably over a hundred attempts, 'Loader' appeared and it flashed the cure fw. Stay calm and be organised. There is nothing worse than finally getting into preboot to find you're not ready with updater.exe and the rgn file.

Great work George,
Firstly, what did you flash with updater.exe? Was it the full 3xx0 fw or a cure fw? Don't worry about the missing audio files or logo yet, let's just take a step at a time. On the About page, what Software Version is showing?

It might be AM in the land of Ol' Glory, but it's late PM downunder. I'm gonna be catching some z's soon but if i don't reply there are plenty of others here more skilled than me: i.e. Loly, Angelo, dasil et al.

BTW, I've not heard of anyone having a problem with the sd card method previously. I've only used it relatively recently but compared to the old methods it's like falling off a log. If you want to stick to the updater.exe/rgn method that's fine, but i can't help thinking that there must have been something wrong with your files when you tried to do the sd method or the process was interrupted somehow.

Dear Rog [aka Speedy Gonzales], NP. I undeleted one of them... we're both toooo efficient ... LOL!

Note by MOD: sorry,Neil... I tried to undelete post but not works (sob!!) ....now works

I see you didn't have Voice Command showing [between Audio Version and Text Version] on About screen. That could be explained by a missing *.srd file corresponding to the Audio version selected, e.g. Jack or Jill selected as voice, but no en_US.srd file in ADR. But it doesn't explain the missing Icon in Apps. But if ASR wasn't checked when 140.bin was modded for the sd flashing, or if the process didn't finish, both the missing Voice Command entry in About and the missing Icon make sense. If you're not sure what i'm talking it doesn't matter at the moment.

Once you've flashed the logo, we'll tackle the ASR problem. First thing then is to check your region 140. Let us know when you have the splash screen back. I'm off to bed.

Maybe you should flash back to 3790 to see if the voice command works when the Nuvi is a 3790.
This is purely a diagnostic process.
Maybe something will come to light !