Ngrrox

My screen is fully black after giving jump starts. I could not adjust fan speed, temp., A/C, etc. and the full screen is black. I tried pressing the CD eject button (even I dont have CD inside and I barely use CD) it turns the screen back and all other climate control functions back instantly. Worth a try

After two weeks of try I have finally resolved the unlock map problem, 0x31A0 issue and upgraded to 2020.10 Map today!! 

The map version I loaded to USB is 2020.10, total file size is aorund 6.1 GB.

Like many others, I have 0x31A0 error too and read every reply in this thread from page 1 to last and learned a lot from others. As other says, the key to resolve 0x31A0 is the USB drive! Basically, the symptom of 0x31A0 is when you insert USB, it fails the validation and says "Please retry update procedure or contact your dealer for assistance"; then if you do not click OK for 3 or 4 sec. it will pop up "Error on Reflashing. Errorcode: 0x31A0. Please touch screen". 

Overall, the key to pass validation and avoid 0x31A0 is to get a big brand USB 3.0 formatted as FAT32. I would recommend an at least 16GB USB drive if you are buying new one as the map will get bigger in following years anyway.

Here are all USB I tried and failed:

Noname 8GB USB 2.0 FAT32 -- No recognized at all
Kingston 8GB USB 2.0 FAT32 -- Recognized, validation failed. 0x31A0.
Noname 128GB USB 2.0 NTFS -- Not supported USB
Sandisk 256GB USB 3.0 exFAT -- Not supported USB

I read somewhere in this thread that people have higher success rate with USB 3.0 FAT32 format, but since my new Sandisk 256GB USB 3.0 came with exFAT which is better capabilities than FAT32. However, Windows does not allow me to format it to FAT32, I have to use DiskGenius to format my 256 GB USB to FAT32. 

After that, just loaded all files mentioend in original posting to USB, validation passed, navigation rebooted and the copying files to car took me around 1.5 hours, and finally I was noticed "Update Maps successfully" and "cant unlock detail maps" error is gone!

Also, with a larger USB I never need to use the Fallback method to load ASR, JCV, SID folders multiple times. All files and folders are copied to my car once.


If you have 0x31A0 issue, just keep in mind and convince your self that your dodge vehicle is a picky vehicle and only premium USB drive can match a premium vehicle. 

Special thanks to RScottyL, tanbam and many other members!

I did not acquire a Garmin Nuvi to get all necessary files. see [https://mega.nz/#F!gQIVkaZR!0gwsBO_4sO7g--fWHbAOMA] If you are reading this, keep it low profile.

On 2019/6/8 at 5:23 PM, David Watson said:

update: tried again unlocked maps when i installed flashed drive it asked if i wanted to update maps, Gamin recognized that they were the same maps and asked to update anyways did so, again 100% maps installed correctly but i got the maps locked, so i guess my GPS unit is corrupt i however did order a Garmin GPS that I will put into car. seen some Dodge Journey radios on eBay fetching $160.00 to $400.00 Canadian. maybe in the fall i will go that route., thanks

I think once they are unlocked before transferring to flash drive, it is unlocked and no need to unlock again. If I were you I would use all files from 2020 with gmap3d and gmapprom unlocked. 

Have you downgraded to CTP 13?

Protected Garmin file toolkit_2254_x64.exe

Just now, David Watson said:

  I used gimgunlock.exe. to unlock files before moving on to thumb drive? should I do it again while files on thumb drive?

Not sure sorry, honestly I have not tried them out yet, I just post it right after I found them...  

22 minutes ago, David Watson said:

Thanks So much, so after an 1 Hr of waiting and updating maps, 100% success it still said "maps locked" and no detailed maps, after radio rebooted,  I would hazard a guess that its my Radio then ? has others had this as well. thanks so much...

I think the original files might need unlocking, see original post for unlocking.

this link may help for map files... keep it low profile.