This one caught me out, but its clear why if you think about it for a moment. If the new firmware has the same variables in the same order as the previous firmware, it looks like retained variables survive the firmware update. Altering the variables results in re-initialisation of retained variables…

[image] twospoons: System.updatesPending() I recall someone reporting issues with this recently; not sure if it's you. I used it in a recent project to shut down the lights and motor if there is a firmware update and it worked fine. Can you elaborate more on the issue you are facing?

Check this thread: [image] How to notify application incase of an incoming OTA update? Firmware Hello, I need to notify my Photon incase of an incoming OTA update. My Photon does something critical for 15 secs(not to be interrupted). If there is an OTA update issued withi…

Retained Variables may get reset on firmware update

General

twospoons April 4, 2017, 9:20pm 3

Check this thread:

Topic		Replies	Views
Does any memory persist through a software update? Firmware	1	656	April 5, 2019
Retained variables are reset after adding a new one Firmware photon , p1	3	846	December 20, 2020
Retained variables during code flash Firmware	3	515	October 17, 2020
How to notify application incase of an incoming OTA update? Firmware	40	6795	January 15, 2019
Backup RAM (retained variables) Broken in 0.4.9 Firmware	1	1360	January 27, 2016

Retained Variables may get reset on firmware update

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