I bought one off Aliexpress some months ago for about $20. They're still available: https://www.aliexpress.com/i/4000056507814.html
The Garmin 1030 until had a 1 piece back. The screen is removed along its edge with a razor blade or a box cutter blade like an iPhone and then you can unplug the various connections inside and unscrew the back panel to replace the case... Its on Youtube.
Hello, where can I find the file To print 3D part that snap on top of the broken connector? Thanks in advance