Dear Users of this forum You have been very helpfull to me to solve my problem of the possible bricked sonof s20. I let you know how I worked it out. At first to solve the lock of the com port I used the FTDI with the power and ground and shorted for a second the rx and tx pins of the sonoff. Now I ...

I doubt, the S20 is bricked, I have also a S20 and had some problems in the past. - If you working with Windows, check the to see the port, where the adapter is connected - Go back to the R_148 version, flash your S20. If you don't have the correct port (normally is 3 or 4) try the other one Hans H...

Grab Termite https://www.compuphase.com/software_termite.htm with FTDI plugged in & Sonoff connected, no other serial monitors open (will only work with one at a time) Configure correct COMs port to match FTDI You should see output like you have already (every 30 seconds) Uptime 2 ConnectFailur...

But, you're using a serial programer right? Just disconnect the power cable between the programer and the Sonoff, don't disconnect the programer from the USB. after disconnecting the sonoff from the FTDI nothing happens on the serial monitor. When I connected the FTDI again on the sonoff the serial...

If you reset the unit (power off and then on) while the serial monitor is open, what do you see? The sreen of the serial monitor goes away when I disconnect. When I connect after that the serial monitor must be opened and after that I see the same message Uptime number connectfailure 0 freemem 14968

grovkillen wrote: ↑08 Jun 2018, 14:31 By the looks of those pictures the unit is working. Did you do the "post-flash" using my tool?

Yes Post-flash marked and with wifi name and password, no effective/result.

grovkillen wrote: ↑08 Jun 2018, 12:36

screen s20.gif (118.05 KiB) Viewed 22077 times

screen s20.gif (118.05 KiB) Viewed 22077 times

screen s20.gif (118.05 KiB) Viewed 22077 times

Could you copy the serial output and post here? If not able to do that, at least take a screenshot for us to look at.

I posted one screenprint but you have got 3 some went wrong.
sorry about that.

Sure, this says it's still alive, ;) Assume by now you have cold booted while connected to a serial monitor ? Information you need will be visible to you then.. Then it will help to know the available serial commands https://www.letscontrolit.com/wiki/index.php/ESPEasy_Command_Reference EG setting ...

Connect to Serial Monitor program, then power up S20, you should see output The LEDs are not pre-configured in the firmware.. If you have serial output - set the wifi via serial, then you should be able to use web-interface Thanks for the tip but after reprgramming is en looking at the serial monit...

see post #18 https://www.letscontrolit.com/forum/viewtopic.php?p=27171#p27171 S20 only has 1MB and should not be updated OTA. Hi Tungsten Did all steps several times. S20 responds on all actions but the s20 stays dead after each action. No wifi and no leds at all. I think the s20 is realy dead. Q i...

I have now tested with 'ESP Easy Flasher'. Tried several .bin including ESPEasy_R147_1024 and with or without setting Wifi. In all cases flashing is done, but Wifi is not working. without setting: no ESP wifi is started with setting: error message 'Unit do not have IP' Any other idea? Please help! ...