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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.

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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.

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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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Ive bought $300 worse of sonoff products  and now I need to waste my time with soldering in order to update the firmware.

If you guys really care about security, please talk with tasmota maintaners and add their servers to the allowed firmware upgrade destinations.

This is ridiculous. Ive bought sonoff because everybody been saying that they are easy to flash with tasmota. Now I need to buy new hardware... Thank you sonoff

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I agree Peter!

I must say, I pretty much only bought it because you can flash it. The hardware is great for the price but only in combination with custom firmware.


@itead - PLEASE support installing TASMOTA firmware over the air


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Keep in mind that tasmota is already rolling out support for ota installation of custom firmwares for some newer devices with Sonoff DIY, where you just need to move a jumper, to be able to do it.

Yes, I've used it for my sonoffmini... but it's not available for latest firmware versions of sonoff basic.

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