Sonoff's don' t come back online after OTA update

[CoolRemote]

I have been building in a couple of Sonoff's. So far they were working fine. Today I have tried the new software version 2.0 and updated them OTA, but now the Sonoff's are not coming back online. Does that mean that I have to take all of them apart again to update them through the serial port by using USB? The upload was done successful is what it said.

[Shardan]

Hello,

remember that updating from rxxx to 2.0.0 resets all settings of the esp.
check if the sonoffs open their own setup wifi as with a new installation
before taking them all down.

Regards
Shardan

[CoolRemote]

Thank you for the reply. I was expecting that it would reset the Sonoff's. They do not come back online in any way.
They also do not come online with their own setup as new installation.

[Shardan]

Then you will have to test a complete reset (off-wait-on) if you didn't already.
If that does not bring up the sonoff, dismount one for diagnosis.