These instructions are a bit out of date with the latest being kept up to date here https://github.com/meshtastic/Meshtastic-device#installing-from-a-gui---windows-and-mac
The debug baud rate was changed from 115200 to 921600 so ESP Home Flasher no longer allows viewing the logs. Instead a terminal like PuTTY is the best option.
You would happen to be able to program in Python? Anyone familiar with Python? GUI Install Improvements
Also, device code can be updated via Bluetooth from the app. Pretty cool!