Thread: GarminCure3 tool - the new way to create cure firmwares for Garmin devices

Hey, if possible please continue the discussion here! IMHO this is the most interesting thing about that topic - the cases where Cure3 tool don't work and needed other approaches. Otherwise the topic will be only with "Thankyous".

Kunix Quote P.S.
I've just discovered that nuvi 13xx is able to flash RGNs with no boot.bin inside. That means that the bootloader is able to flash regions. For two years I was sure it's impossible. Life is a wonderful thing. Kunix Unquote

I've often thought about this but would not know how to try it.
So in theory you could flash a new image to repair the internal flash drive or any other region which may have become corrupt (Except if the corruption is in the boot block and the nuvi cannot enter into pre-boot mode)
How would one go about making the rgn file ?

But this doesn't add any new repair methods. Except maybe when boot.bin is unable to start. But in this case the firmware is most likely to be unable to start.
How-to make a RGN:
drag fw_all.bin and other files to RGN_Tool and then save it as RGN.
OR
makergn.exe 097201000200.rgn 0x0E fw_all.bin

Hi Kunix,
Thank you for your fast response.
I used the 097201000580.rgn file from archive, drag it into updater and update completed successfully in about 1 minute. The Nuvi 1390 remained in the white blank screen and no Garmin drive appeared into MyComputer.
After power cycle, the same blank screen followed by the turning on/off Garmin logo appear.

What you do before this problem?

Originally Posted by lolypop000

What you do before this problem?

This is how I got it, plus a broken digitizer ... I replaced the digitizer with new in order to try fix software
After updating successfully with 097201000580.rgn file from Kunix, the Nuvi 1390 starts with white blank screen for about 4 sec, goes to Nuvi logo screen for about other 4 sec after which screen shuts down for 1 sec, Nuvi logo reappears and so on..

Originally Posted by kunix

Hi. Can you describe in detail what happens when you turn on your device? I'm interested in that black screen, Garmin logo, brightness level and so on. I need the exact sequence, because things are often different from what they appear to be.

As I understand this, it follows like this:
1) white screen
2) Garmin logo
3) black screen
4) Garmin logo
..................

Also try flashing this and describe what happens:
[Only registered and activated users can see links. ]

HI Kunix,

That was exaxtlly how Nuvi 1390 was working after trying GarminCure3.
I used the file you provided and now it starts and stays with white blank screen, either in normal start or in Boot mode start.
In boot start mode device is seen in Win Device Manager and by updater but no drive appears in MyComputer.
Thank you for the help,
Florin

Did your nuvi behave differently before trying GarminCure3? To check it, try flashing ORIGINAL firmware.
Now I know that your firmware is really started by the bootloader, because there was an infinite loop at the beginning of the firmware in the second RGN.
Now I want to find the exact instructions of the firmware that cause crash/reboot. This is a very long process, so let's do it in private, and then just publish the results here.