NS Panel got stuck after upgrade

After the latest update of the Blackymas blueprint (3.4) I triggered the TFT update from HA. After reboot my NS Panel is stick in “system data ERROR” message. I have tried almost everything I can come up with after googling the internet. web.esphome.io and “Prepare for first use” can be triggered when I connect the device to my computer, it runs the installation, but after completion it shows the error “An error occurred. Improv Wi-Fi Serial not detected”. I have tried the same procedure on two computers, updated serial drivers etc with no success. Anyone knows how to either restore Sonoff NS Panel original firmware or how to force this esphome reinit process?

In web.esphome.io I also tried to view the Logs when connected, but they are just empty.

When enabling the device with power, it more or less instantly shows this error message and I cannot do anything more… so pretty stuck. Is my NS Panel toast or how can I save if?

after several retries I managed to get tft 3.4 in and now I’m up and running. Sorry for not knowing exact what was helping here, but I guess a flash with blank was the thing that moved it forward and then reinstalled with all the yaml files after that.