We have many Photon devices in the field and want to OTA upgrade to 0.7.0 to pick up the latest WiFi stack (to work around what I believe is a WiFi related memory leak in 0.6.3). To ensure the upgrade is reliable I have been running repeats of flashing a “blank” 0.7.0 app (which publishes the firmw…

Have you tried OTA update of of the Device OS (ie system) firmware only? Refer: [image] OTA system firmware (only) update via CLI Firmware Quick confirmation: it worked as @ScruffR had advised. You OTA download System Part 1 and then wait for the device to come back onl…

[image] khp: Any shared experience / insight / workarounds would be greatly appreciated! Does it act any different if you try an intermediate upgrade to 0.6.4 followed by another upgrade to 0.7.0? The 0.7.0 release notes recommend doing it that way for Electron OTA. Not sure if it would mak…

Thanks for the suggestions, I will give them a try. I am using the same “blank” app for 0.6.3 and 0.7.0.

Are you familiar with the threads that discuss downgrading from 0.7.0? If not, might be worth a look. Example links: [SOLVED] Upgrading to 0.7.0 then downgrading to 0.6.1 breaks bootloader funcitonality Firmware 0.7.0 Issues - Rollback options? Issues with firmware 0.7.0 How to OTA flash 0.7.0 sy…

Thanks, yes, I have seen those threads. I haven’t had any problems downgrading from 0.7.0 to 0.6.3 over DFU, only upgrading from 0.6.3 to 0.7.0 OTA. For comparison, I will also run repeats upgrading to 0.7.0 over DFU to see if the Photon gets stuck in the same way.

I’ve confirmed that I can get into the same stuck state whether or not the flash update is initiated from the cloud or over DFU, which makes sense because it typically gets stuck in one of the OTA update of system part 0/1/2 phases. Using Wireshark I am able to see the transmit power from the Photo…

[image] khp: I’m not able to see what the photon actually thinks the RSSI is for a stuck case because the update is failing before I can report WiFi.RSSI() when the app runs. Did you try publishing WiFi.RSSI() from your 0.6.3 "blank" app? When you've had problems with updates, has the Photon…

Thank you for the follow up questions. The RSSI reported from my blank app running on 0.6.3 or 0.7.0 is typically in the range -65 to -70 dBm. I use ethernet for my MacBook so the target photon is the only device on my desktop using WiFi and I am powering it via the MacBook USB port. I'm confiden…

Hmm… kinda mysterious. That signal strength sounds fine to me. One other hardware thing you could try to rule out is heat buildup. If you’re running updates in a loop, your radio may be running at a high duty cycle and warming the module up a lot. Have you done anything to monitor (e.g. temp probe,…

The device is out in the open on my desktop running at room temperature. To summarize, from what I can tell there are two failure modes in the “safe mode healer”, one in which the update fails to complete but trying again will typically succeed, and a second in which the update fails and all succes…

@khp - I second your experience. On the 10 photon/P1s I’ve upgraded from 0.6.3 to 0.7.0, 2 have gotten stuck in safe mode. One was REALLY inconvenient as its mounted inside a wall… that one ended up basically bricked. The other I was able to push thru the update again after a reset and it worke…

Photon stuck in safe mode while upgrading to 0.7.0

Firmware

UMD June 16, 2018, 11:48pm 13

Have you tried OTA update of of the Device OS (ie system) firmware only?

Refer:

Topic		Replies	Views
Update to 0.7.0 goes wrong Troubleshooting	63	6696	April 29, 2019
Photons dying with over-the-air updates Troubleshooting	22	2059	April 27, 2017
Photon stuck in safe mode after remote flash Troubleshooting	3	1234	May 23, 2018
Photon stay in OTA mode Troubleshooting	8	1578	November 25, 2016
Sketch not "taken" after flashing? Troubleshooting	40	3066	August 15, 2017

Photon stuck in safe mode while upgrading to 0.7.0

Related topics