I am having issues with an electron that I have. I have had it programmed for a long period of time being used for testing a product of mine. I went to use it again last week and was unable to connect to it via Particle Dev Serial Monitor as I always have without issue. The issue was that as soon as I would try to connect, the electron would start flashing that it was in DFU mode.
I am running Mac OS 10.11.6 and do not recall any system changes since I last used it, but there may have been some system update.
Since then I have now updated to the latest Particle CLI, Particle Dev and tried updating nodejs, but had to rollback to an earlier version (6.8 I believe) in order to get Particle CLI installed as it was throwing some serial port errors.
Since doing all the above updates, I am able to run "particle update" on the electron and then "Particle flash --usb xyz.bin" to upload my firmware to the electron, but trying to connect with the serial monitor in Particle Dev still triggers the electron to go into DFU mode.
Has anyone encountered this before or have any suggestions as to what to try next?