The ESP32 Firmware Patching will be available in the new Web GUI since this release!
The necessary tasks are now as easy as possible:
First switch to the https version. (The images are already outdated, the https section does not exist any more!)
Now you can choose between using an existing firmware image or read the current image of the box:
In both cases you have to select the COM-Port where your UART is connected (no image available)
a) Load File
First choose the file (no image, simple file selection dialog)
b) Read Flash
Then you can patch the firmware image (or leave the file as it is)
After that you can flash your Toniebox:
All in all work done in a few minutes!