Espruino WiFi, red led lit on and no serial port after firmware upgrade

Hello @Grzegorz_

'Before the upgrade it was working fine'

For how long was it working?

What version of Espruino were you at, and what version were you attempting to flash (2v0 ? ) ?

Have you tried powering down the WiFi then reconnecting? Have you tried closing the IDE and relaunching?

Worst case, have you attempted to re-flash back to an older version from:

https://www.espruino.com/binaries/

or 'Find a binary'

http://www.espruino.com/Download#flashin­g

and what were the results of performing that task?

May I ask what PC O/S? Mac/Win10/Linux

What baud rate is the serial port set to?   IDE >> Settings >> Communications

Is there any additional detail listed in the console output?    IDE >> Settings >> Console towards the end of the listing