Using Electron / Photon in high volume commercial product

[Cameron]

@simmikolon

BTW: We have tested 2 Electrons and 4 Photons in our industrial machines and those Electrons tend to have OTA flash issues ... more than those Photons ...

Haven't had any issues with Photons, they seem pretty decent.

See also my post here where I've had to reflash via USB to bring them back alive again.

Electron: Error writing firmware - unknown message undefined

So after a good 4 hours today trying to get my Electron unbricked - I thought best to share my painful learning. I was getting the below message over and over, no matter what I tried, firmware updates, code version changes, DFU updates. [image] Error writing firmware - unknown message undefined In the end… the magic fix was via the particle-cli Step 1: Go to DFU mode (hold mode & reset, then release reset, and hold mode until the LED flashes yellow) Step 2: Run the command in terminal…

The 25% is OTA not working, but most of the time a power reset fixes it. Only a small percentage of the time do I need to do a re-flash.

The times when I need to do a re-flash my code via USB tends to have these three aspects:

1. Custom APN code use
2. Custom APN code was accidentally listed twice in code
3. Use of AT commands to communicate with the ublox module for SMS commands.