Likes: 
Looking likely there's flash damage. However let's try some other things with SD card. Also what exactly happened to it? I know you said it bricked while using GarminExpress but can you give any more info, such as what was being updated, the detail map, firmware or other files at the time? Was the update interrupted or did it start bootlooping after properly disconnecting from GE?
Meanwhile, see if it can even recognize an SD and read from it by trying to dump it's NV. Read this: [Only registered and activated users can see links. ]. Command for your 1490 is "rrgn,41,1:/41.bin" as it's an older device. Let's try to dump a couple of other regions too, firmware regions 14 and 127, so make your update.txt file with these commands:
Same as with flashing using Updater.exe, make sure the device is completely off by holding the power button down for 10 - 30 seconds to force it off, then insert the microSD and turn it on again. If it works 'Loader' will show on the screen and it won't bootloop until the flash finishes.Code:Please Login or Register to see the links
Welcome guest, is this your first visit? Click the "Create Account" button now to join.
Results 1 to 10 of 30
Thread: Need Help with Bricked nuvi 1490
Hybrid View
-
12th August 2019, 03:09 AM #1Important User
- Join Date
- Jul 2017
- Location
- CA
- Posts
- 1,466
- Rep Power
- 1058
-
12th August 2019, 04:18 AM #2Member
- Join Date
- Jul 2019
- Location
- Canada
- Posts
- 15
- Rep Power
- 0
I updated it with Garmin Express. Then I loaded the 2020map.
Everything went fine and tested the unit fully before installing it on the windshield of my daughter's car.
In few days she calls me that it bootlooping and it haas been doing that ever since.
The sd card doesn't work either. Heres what I did:
With my original firmware I extracted the boot.bin and saved it as Ldr.bin
I created the update.txt with the code above
I formated a 2Gb and a 8Gb card fat32 and created Garmin\Updater\0972\ where I copied both files. Tested both sd cards.
Then completely shut down, insert the sd card and started.
No "loader" message on screen and finally it bootloops again. (when I power it up it goes to GARMIN logo screen and stays there for 20 seconds or so then the screen flashes white and restarts)Last edited by cbstealth; 12th August 2019 at 04:30 AM.
Reply With Quote
Bookmarks