Hi Thomas,
It doesn’t work either on Linux because of
this.fileOpenDialog.setInitialDirectory(new File(Preferences.userNodeForPackage(getClass()).get("FilePath", "C:\\")));
in FEDFXMLController.java:3969
I spent 1h trying to recompile the decompiled .java and re-package the .jar without success.
At the end, I used a VirtualBox VM with Win10 and it worked out of the box, without using the bootloader mode.
00:57:17.989 > Device: COM3 Bootloading started
00:58:25.543 > Device: COM3 Bootloading Successful
The module is a bare RN2483 chip connected to a FTDI USB/Serial adapter.
Pierre