Test Programming Mode

[flywire]

A test for Programming Mode would be nice.

https://tasmota.github.io/docs/Getting-Started/#programming-mode

You can test whether your device is in Programming Mode by attempting to read information from the ESP82xx chip...

• esptool.py -p COM5 read_mac (It should read the MAC address. It may fail afterwards during Uploading and running a "stub". This is normal.)
• esptool.py -p COM5 flash_id

If everything went well, you are now in Programming Mode and ready to continue with flashing. If the flashing process is unable to start, disconnect the device and retry the steps.