E-Series - Blinking Green


#1

For posterity – this thread documents a journey debugging an eseries that will not connect.

This discussion seems to be the other most relevant thread on the subject (Electron)

Context:
Device(s) location: Boulder, Colorado
Device 1: E-Series Dev Kit (info available for DM)
– Last connected on: Nov 9th 2017, 11:28 am (re-attempted without success on 11/27/17)
Device 2: E-Series Dev Kit (info available for DM)
– Has never connected (first attempt on 11/27/17)
Logging firmware: https://github.com/rickkas7/electron-clouddebug
Device Logs: https://gist.github.com/stopshinal/6fcb10f8e60103f992f3699a6f5905b8
Carrier Log (Device 1): https://gist.github.com/stopshinal/8e96ce89682726aae281976d715f2ef8

Possible Causes

  1. Both devices may be stuck in “Test Mode”, however it’s not clear to me if they are both “stuck”.
  2. “Your modem APN/password/username may be wrong” seems relevant.

#2

Over the last week i’ve plugged the devices in for an hour or more to see if either would connect. It’s been about a week since I began trying to connect these in earnest, but it wasn’t until today when they both connected. Both were running the debug firmware from @rickkas7.

Upon this success I unboxed a 3rd e-series and attempted to connect. It failed for about 10 minutes before I flashed the debugging firmware down over DFU mode. This time it connected after about 5 minutes (logs available). I reset and attempted again. This time it connected in about 20 seconds.

I’m not sure what the root cause was, but time seems to have healed all of the wounds so far.

I’m going to flash all the e-series devices OTA a few times to ensure I get some data-movement registered with the Telephony partner and hopefully this will keep the devices alive.