Thread: Enable features in your nuvi 12xx, 13xx and 14xx - JCV, LA, TTS

Originally Posted by dvazg

Where did you put the JCV folder and where is the IMG file? Are they compatible, i.e. do they both belong to the same map edition?
When you performed flashing, did you use the corrent flash file, the one for 4.90 SWV (for 13xx)?

I put the JCV files (which came with the corresponding map file) in .system folder. I put the maps in the folder called Map in the root directory (so that I can managed the map names sensibly). I can swear I used the correct flash file 4.90 for my nuvi 1300. Everything will work fine again as long as the JCV folder is removed.

I have also just tried moving the map file to the .system folder, but this does not solve the same crash problem when the nuvi navigates to a junction needing to call for JCV information. Really headache..
1xxx with US/EU firmware cannot process Asian JCV files. See P29 here for explanation: [Only registered and activated users can see links. ].

When you simulate a route (regardless if JCV are included), when you press icon for forthcoming junctions (upper left pic), you enter a a new interface, showing you next junctions, and you can list them by pressing arrow downwards. In this interface, if JCV is flashed correctly, you shoud see a new button: "Junction view". If there is no associated JCV image, the button is shadowed, if there is, you can press it to show the image. Can you see that on your device? As I said, a shadowed button should be seen, even if you don't have a JCV file installed.

If "Junction view" button is available, do some experimenting:

1. redownload the JCV file or try some matching JCV files with lower resolution (we had a discussion about that in CN Europe 2011.40)
2. move the JCV folder to Garmin folder
3. move the JCV folder to Garmin folder on your SD card

If it still doesn't work, if would be helpful if you could show your inventory page: go to diagnostic menu by pressing battery icon for 5 sec -> click "next" once (version information page) -> click "start test" -> click "more": it shows the most important features of the device. You could make a photo of that page and we can see where is the problem.

First of all thanks for your time to help, much appreciated.
I just checked again, and I can report that I can see the greyed out 'Junction View' with or without the JCV folder.
I have also tried to move the JCV folder to the Garmin folder, but the same crash happened.
I'll try to test with other maps with junction view, which I don't have any other at the moment.
By the way, I have no knowledge of getting any JCV with 'lower resolution'. Do you have any hint on that?

I also attach my Inventory list here, hope this helps.

Spoiler: pic

[Only registered and activated users can see links. ]

Your inventory looks fine, to my knowledge, it is just as it is supposed to be. (all tests passed, splash verion is 1340-50. I'm just missing the JCV item -should be just above Splash item. Probably, this was because you didn't have a JCV file in your device during inventory inspection).
I noticed, that you're using a Hong Kong map as gmapprom.img. Try removing this file (simply by renaming it to e.g. gmapprom_._img - look for it in ".System" folder). Maybe this helps, if your JCV is in conflict with primary map.
Put the JCV file into device and repeat the inventory inpection. There should appear the JCV item, showing its version and on the right side, there should be remark: "Working".
In CN Europe 2011.40 (which I use) check the following: [Only registered and activated users can see links. ]
In the post, you can find three versions of JCV file. All are matched with CN Europe 2011.40, but differ in resolution. In my device (nuvi 1350, flashed during 4.90 SWV, after update to SWV 5.00 everything continues to work normally) all three files are OK, but the quality of JCV images differs.

P.S. How is working your Lane assist function? Originally, in nüvi 1300 it is not available, it shoud be available now.