Hi Rafael
Apologies if I am stating the obvious (I am quite new to the M5Stack arena). I had the same problem as you (in fact, I still cant get the web integration to work), but I did manage to get the Windows UIFlow install to work as follows:
(1) Installed the CP210x_VCP_Windows
(2) Installed the M5 Burner software for Windows
(3) Installed UIFlow for Windows

I then used the M5 Burner software to download the v1.5.2 firmware for the M5Stack Fire which has a 'Setting' option of 'Switch Mode' in it (when installed/Burnt). Once the Switch Mode was set to 'USB Mode' , my M5Stack Fire then connected to the windows version of UIFlow with absolutely no problems (I also changed the VER option to BETA in UIFlow for Windows which sets the UIFlow to version 1.5.2 as a just in case).

So far (fingrers crossed) it has connected everytime.

Please note, (not wanting to state the obvious but I am not sure what version of the firmware you have) .... but the 'menuisation' on the M5Stack Fire only appears when you download the v1.5.2 firmware (unless I was installing previous versions of the firmware incorrectly).

Thinking about it, maybe if I set my switch mode to 'Internet Mode' that will start working for me ......

hope it helps,
cheers
Richard.

Hi,
I have created my own python app in the UIFlow console (v1.5.2) on windows and can download and run it on the M5Stack Fire. However when I reset the M5Stack Fire it goes back to running the previously installed (happens to be one of the demo python apps that I installed). If I dont want that to run, I can choose App or Setup .....

No matter what I do, this happens consistantly at bootup. I get the option for 'App' or 'Setup' and if the M5Stack receives no input choice from the user, defaults to run the previously installed app (except in my case ...that isnt my user written app that I uploaded, but a previously uploaded demo app).

More importantly .... how to I get MY User written app added to the list of Apps that appeared on the M5Stack Fire after I burned the V1.5.2 firmware to it? (and it would be handy to delete apps from that App List on the M5Stack Fire too)

many thanks for everybodies time
Richard.