2016 Chrysler Town and Country RHB

Hey everyone.
First post here
I have an RHB radio in my T&C.
I was able to add the US 2026.10 map using gmapsupp.img
I then named the Canada and Mexico map gmapsupp1.img
The US map flashed fine, but the canadian map wouldn't flash. I then changed the Canada map to gmapsupp.img and it doesn't detect it as a supplimental map.
I have the file structure e:\garmin\gmapsupp.img on a fat32 formated usb
Can anyone please help me? Right now it appears as tho the original map is gone... I have no canadian navigation.
Thanks

Welcome to the forum, have a look in your garmindevice.xml there might not be an option for a second supplemental map, only gmapsupp.img and gmapprom.img.

Hey, thanks for reply.
I searched through the garmindevice.xml and there is no mention of supplemental maps only base maps... but the system picks up the gmapsupp.img file.
Any ideas?

Hello everyone...
I am desperately trying to find City Navigator North America 2018.....for my 2016 Chrysler T&C
All the links I've tried at this point are experied....
I will name my 1st born after you.

Thanks in advance

@Draiter
no need to create another thread.
Not an easy task to find old maps as the have long gone past their use.
Are you trying have North America as 1 file ?
You can make a custom mapset using Mapsource under the 4Gb file size limit from the current version without Mexico and other selected areas you are unlikely to drive to in your own car, Alaska & Hawaii for example.
[Please Register or Login to download file]

Download the files for PC

Hi again,
Sorry for the new thread....
Every time I try to update to a new map I get this warning saying the map is not compatible... I am on software vers 6.22.
So I am at a loss as to what to try next...
I do appreciate the help.

GOOD NEWS....Well for me anyway... lots and lots of searching
I was able to restore my system back to normal.... lots of steps.. but it's back working...

@GarminNuvi - Thank you for your work in making these map updates available. I much appreciate your time and effort.
I have a 2013 Chrysler T&C with an RHB unit. I've been able to update the software to 50.01.01 and 7.11. This is where I'm stuck though. I loaded a blank flash drive with the extracted map file (gmapprom, but renamed it gmapsupp first) from

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and inserted the drive into the head unit. (I put the file in a folder named "Garmin") It immediately stated that PND did not update. While in the navigation app, I took the flash drive out and plugged it back in. It then spent over two hours on the screen "Please wait.... Reading Files...". I finally had to turn the van off.
What step am I doing wrong? I can't seem to piece together the correct steps from all the different posts that I've read. Any and all assistance is GREATLY appreciated!

Update 8/15/25 @ 11:52a EDT: I downloaded and tried the .img file from L48 & Canada 2026.20(gmapsupp).rar and got this error:
The map update provided is not compatible with your navigation system.
Current Map:
None
Update Map:
Lower 48 States & Canada

Update @12:47a EDT: I extracted the gmapprom file from US (D9643090A), loaded it directly into the 'Garmin' folder on the flash drive (as-is, i.e. not renamed) and tried it in the van. Within a few seconds of plugging it in, it displayed "Please wait.... Reading Files...". After only about 5 minutes, it then displayed "PND Update Completed." I clicked okay and checked the map version. It is still sitting on 2013, so I assume the update didn't actually happen.

@BabaAsehri
I don't have any experience with vehicle head units, there are a few Chrysler forums that have.

BabaAsehri wrote:Update @12:47a EDT: I extracted the gmapprom file from US (D9643090A), loaded it directly into the 'Garmin' folder on the flash drive (as-is, i.e. not renamed) and tried it in the van. Within a few seconds of plugging it in, it displayed "Please wait.... Reading Files...". After only about 5 minutes, it then displayed "PND Update Completed." I clicked okay and checked the map version. It is still sitting on 2013, so I assume the update didn't actually happen.

Have you turned the vehicle off and back on to reboot it? Most computers require a reboot to complete updates.

Galane wrote:

BabaAsehri wrote:Update @12:47a EDT: I extracted the gmapprom file from US (D9643090A), loaded it directly into the 'Garmin' folder on the flash drive (as-is, i.e. not renamed) and tried it in the van. Within a few seconds of plugging it in, it displayed "Please wait.... Reading Files...". After only about 5 minutes, it then displayed "PND Update Completed." I clicked okay and checked the map version. It is still sitting on 2013, so I assume the update didn't actually happen.

Have you turned the vehicle off and back on to reboot it? Most computers require a reboot to complete updates.

@Galane - Yep, even let it sit overnight. It still shows 2013.

Please PM me,
maybe I can help you with this sh..t.