So, with the above information in mind, if you want to download only the single D3060350A.JCV file that I posted earlier the link is the same as before: There is nothing wrong with the update, this is just part of increasing the abilities of navigation units.” It doesn't have to read the entire 2.6GB file to get the image it needs when they are broken up into several files. We continue to add more and more of these images to our updates and they are split up into regions to help make the device faster. The JCV files show images of major highways, exits, and merge lanes upcoming on a route. “As more information keeps getting added to the mapping, the files are going to continue to grow in size. In a reply I received the flowing message from Garmin Support:
#NAVIGON MAP UPDATE FILE UPDATE#
Is this JCV file update in both size and number of files an update error? Will you please explain why this drastic JCV file change?” I'm wondering why my JCV file folder has grown more than three times in size from the last update. There was the expected file, D3060350A.jcv, that would follow in number sequence to the former D3060340A.jcv file, but there were three additional JCV files, D1279430A.jcv at 821,568KB, D2334380A.jcv at 227,567KB, and D2335380A.jcv at 771,230KB.
![navigon map update file navigon map update file](http://www.bmwmoa.tourstart.org/uploaded_content/9/6/96b8625ca4001506ae57693278e5bcb7.jpg)
When I opened my JCV folder, my former single JCV file (851,474kb) had updated to four JCV files that added up to 2,671,393KB in size. I was alerted to the drastic JCV file size change when my computer showed a red bar that indicated my storage was near capacity. For the former Garmin update, 2021.30, my GPS downloaded a single JCV file, 851,474KB in size. “In the latest update, 2022.10, my Nuvi 755T downloaded four JCV files as seen in the attached image file.
![navigon map update file navigon map update file](http://www.mygpsmapupdates.com/wp-content/uploads/2011/06/check-for-free-tomtom-map-updates.gif)
I sent the following message to Garmin Support for an explanation: Beginning with the latest 2022.10 map update the JCV file download changed from one to four separate JCV files with a more than 3-times folder size increase to 2.54GB. In recent years the Garmin Large Full-Screen JCV file has always been downloaded as a single file that was around 830MB in size.