Problems Nuvi 3760lmt Half bricked, please help?

**chibipaw** · 22nd November 2012, 02:33 AM

Bare with me, I hope this isn't TL:DR for everyone, but Im really in a bind here and Im running out of ideas.
My 3760 is pretty vanilla, no mods, just a couple of extra maps on an SD card.
Story is when I was in the middle of navigating on the freeway yesterday, I had an incoming call and bluetooh + iphone chatted over the Nuvi. During the call, the 3760 crashed, resulting an infinite reboot loop that seems to be all too common.

I was able to revive the unit by plugging it in to my computer in USB mode. Internal memory appears to be damaged because the volume name was gobbly-goopped and no visible normal files, but only around 300mbyte left in space on the device, and doesn't appear to be writable. So, I ran chkdsk, and I got the internal drive back as almost blank. I was able to clean the file system to a point that I was able to do updates. After a firmware and map updates, I notice FM receiver update keeps erring out with a "Permission Denied", and the dashboard theme seems to be stuck in the blue garmin theme instead of the green default. I also notice there are oddly named files in the root directory. One had no text in the name , two was named ~b ~b with time stamp in the year range of 2069. I wasn't able to delete them in the conventional manner. I've also performed a few NV ram erasing.

So I decided, to simply back up what I can, including .System folder. Formatted the disk in FAT32 in hopes that it'll clear up whatever that might be lingering in the file system.

After that, I've simply copied the entire structure back to the internal memory, less the strange looking files since I wasn't able to copy those anyways.

Shutdown, rebooted. It starts up as normal as if it's a virgin, after the logo screen, I am given a "Select a Locate" screen, with no selection and an OK button. It will not go anywhere from here, and it will not go back to USB storage mode.

So far I've tried a number of methods from various tutorials and threads on this forum.
*NV ram reseting using right lower corner holding.
*Flash down using Updater.exe to 4.5, 4.70 4.90, and back up to 5.00 fw. Same behavior.
*Used Cure3 tool, I was able to manipulate the file system, all the files are there. Including the .System and locate.xml
*Flashed firmware back to any original garmin firmware, and am back to the same "Select a Locate" screen. Deleted, the internal memory structure didn't make a difference. Repopulated it again, didnt make a difference.

Seems like the unit works, but some how after my formatting of the internal flash drive, it had lost the capability of reading things off the still hidden .System folder. Maybe there has to be a certain way I have to place the file on the internal drive?

I'm just looking to my nuvi 3760lmt back to a normal state. Any advice will be greatly appreciated.
I am using OsX Mt Lion, Win7, and Win XP. All 3 machines have the typical tools from this site. If it helps.
Garmin wants $150 for a swap in since its out of warranty.

Below is what it boots into now

[Only registered and activated users can see links. ]

**lolypop000** · 22nd November 2012, 12:45 PM

Run webupdater and download all becouse you dont have text folder on root of your internal memory.

**chibipaw** · 22nd November 2012, 07:59 PM

web updater won't run at this point. Since it's asking for initial locale settings.
I have a feeling I need to some how re-create some kind of a basic structure first.

if I use cure3 to put it into USB storage mode, webupdater wont recognize as a garmin device.

So how can I go about getting it to not prompt me that during boot?
Seem like my backup structure maybe have invalid attributes? Is there a know working basic stricture I can download manually somewhere that I can use?

Thanks.

**catymag** · 22nd November 2012, 09:16 PM

No problem for your Nuvi in getting files if GarminDevice.xml is in Garmin folder..
You can run Webupdater just having a GarminDevice.xml in a Garmin folder in a pedrive and get all the needed files,
having Garmin USB drivers installed on pc.
So install them, attach your nuvi USB and start Webupdater.

Kunix's cure is made for non starting nuvis, your nuvi starts, you just need probably txt files as Lolypop wrote.
Edit:I see you already used Kunix's cure, how did you format Nuvi?

**kunix** · 22nd November 2012, 09:27 PM

How did you format the internal disk of your nuvi? It's possible that Windows understands the filesystem it has created (what a surprise!), but your nuvi doesn't. I've seen this many times. Try formatting with RMPREPUSB as suggested in GarminCure3 topic, it's the right way.

**lolypop000** · 22nd November 2012, 09:41 PM

Download rar and extract.
Add folder text on root of your nuvi and add locales.xml in folder .System

[Only registered and activated users can see links. ]

**chibipaw** · 22nd November 2012, 10:22 PM

Originally Posted by kunix

How did you format the internal disk of your nuvi? It's possible that Windows understands the filesystem it has created (what a surprise!), but your nuvi doesn't. I've seen this many times. Try formatting with RMPREPUSB as suggested in GarminCure3 topic, it's the right way.

Just installed the garmin usb driver, and got the webupdater to the the device briefly with "The update file is corrupted" error. Entire process from starting the webupdater to that message is around 5 - 10sec max

I've first formatted the Fat32 FS under OSX, which its probably not a good idea.
Decided to do the same in Windows 7. Probably wasnt a great idea either.

Come to think of it, it is possible that both OS did understood the file system, but the device probably doesnt.

What Im going to do is to try the RMPREPUSB formatting next and see if I can get anywhere.

Then with Loypop's file that he just attached. (thank you)

**kunix** · 22nd November 2012, 10:32 PM

Use this tutorial for formatting: [Only registered and activated users can see links. ]

**chibipaw** · 23rd November 2012, 02:45 AM

Looks like it was all revolved around the file system formatting. Using RMPREPUSB did the trick. Now it's happily restored for the most part using the webupdater. Yay!

I do notice a couple of things:

1) "Firmware Update for GTMxx Traffic Receiver" wont install with a "Access Denied" error. I assume I will need to plug the USB traffic receiver in with the unit some how to make this happen?

2) Themes are gone, only option is the default Garmin blue color theme, not the green that came with the unit. Is there a way to retrieve these theme files as Garmin doesnt seem have removed them from manual download.

Thank you, everyone for helping me revive this!