I strongly recommend you don't mess with the bootloader. It may seem like it's gone but this is a common thing with arduinos - it seems like the bootloader is gone but it isn't. I have spent many frustrating hours with arduinos rebooting 1 second after starting compile, rebooting arduino 2 seconds after starting compile, etc. sometimes that trick works. Sometimes it doesn't. If it *looks* like it loaded a new firmware then it did. Either it works 100% or it works 0%. There is no in between where the progress bar gets to 100% but it didn't work. If the progress gets to 100% then it loaded properly.
the arduino IDE works better at loading a new firmware than the ultimaker GUI. The Ultimaker GUI doesn't seem to like certain COM numbers (e.g. COM3 through COM10 seems to work but sometimes my arduino is at COM13).
I was attempting to upload a plugin to have the service create a curapackage for testing. After I uploaded a zip file of the source and clicked save, nothing happened. I clicked back, and there was a listing for the plugin. I clicked the hamburger menu in the upper right corner and clicked "Archive", and the plugin disappeared and is not listed in any of the categories on the left side menu.
If I try to create the plugin again, it says the PluginID is already in use. How can this plugin ID be recovered after being archived?