Here is a short how-to in case you want to upload routes to the MG satnav system. I have developed this on a try-by-err basis, using bits and pieces I found on the internet. I have placed links to the tools I used at the bottom of this post.
1. Prepare your route files by whatever means you prefer. The upload file must be a list of maximum 100 waypoints in KML format.
To upload the files in the MG satnav, I used an upload package which I found on a Dutch forum. Copy this to an empty FAT32 formatted USB stick connected to your PC, placing the 'synctool' folder in the root. Delete the file 'update_checksum.md5' in the 'synctool/updates' folder. A sample KML file (containing European MG dealer addresses) can be found in the 'synctool/updates/content/userdata/poi' folder.
2. Create a new 'synctool/updates/content/userdata/route' folder on the USB drive and copy your KML route-files to it.
3. For each KML file, create in the same folder an STM file (flat text file with extension kml.stm) with one line 'purpose = copy'.
Before uploading, the MD5 checksums must be generated. For this I use a tool called SKU Creator. It expects the 'updates' folder to be named 'content'.
4. Rename the 'synctool/updates' folder to 'synctool/content'.
5. Run the SKU Creator and point it to the 'synctool' folder on the USB drive. Click on 'Generate MD5 and update_checksum for all files'. This will generate MD5 checksums for each KML file, and place an overall checksum file, 'update_checksum.md5', in a subfolder 'synctool/update_checksum'.
6. Rename the 'synctool/content' folder back to 'synctool/updates'.
7. Move the new 'update_checksum.md5' file to the 'updates' folder and delete the 'synctool/update_checksum' folder. From here on, if anything changes on the USB drive you must regenerate the checksum files as per step 5. above.
8. Place the USB drive in the car, using the USB port also used for CarPlay. In the system menu, scroll to Navigation Update and press 'Start'. Confirm to proceed with the upload and Bob's your uncle.
The uploaded routes can be found via the 'New Route - Saved Routes' menupath.
Please note, if (one of) the uploaded files cause the system to freeze (as happened to me), you can back these files out by replacing the copy instruction in the STM file by 'purpose = delete'.
Good luck, please let me know how you got on. Happy motoring!
Sources:
Upload package:
2020911_ZS11E_UK_Dealer_update_RC7.zip
SKU Creator:
Renault R-LINK2 - SKU Creator (DOWNLOAD) - RENAULT-forum