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Ability to downgrade firmware


I'm one of the maintainers of the opensource project , however with the latest release there appears to be certificate pinning (or similar) happening. This means that users can only upgrade the firmware in the Sonoff devices if they open it up, and solder in headers.

Using this OTA method users could get all of the benefits of an open platform, without the the need to open up the device and solder etc.

To allow customers to still do this, it would be great if you could either, provide a way of having an alternative update server (with no certificate pinning), or allow using to downgrade to previous versions of firmware that did allow SonOTA to work.

Your help is appreciated to allow every to benefit from the open platform.

Thank you.

145 people like this idea

Don't waste your money on sonoff that you can only flash by soldering. They don't care about their customers. This feed is proof. Get yourself the Shelly products. I did months ago and no regrets.

Se hace imprescindible la opción a regresar a una versión anterior.

En todo caso, que se pueda desinstalar la APP e instalar la versión de firmware que pueda interesar.

Deben estar disponibles las diferentes versiones.

The option to return to an earlier version is essential.

In any case, you can uninstall the APP and install the firmware version that may interest you.

Different versions must be available.


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