Hat geklappt, danke!!
Habe gemacht, die Datei in das Verzeichnis sys kopiert, dann auf FW 2-04 aktualisiert, dannach erst auf 2.05 - diesmal gab es keine Fehlermeldungen, danke. Habe dann festgestellt, dass die WebControl doch wieder zurückgesprungen ist auf 2.0.4, habe das auch nochmal auf 2.0.7 upgedatet, jetzt scheint es alles zu stimmen, supper, danke an alle beteiligte. Habe zwar nicht verstanden, was die Ursache war, aber Ergebniss ist so, wie gewünscht!

It worked, thanks !!
Did that, copied the file into the sys directory, then updated it to FW 2-04, then only to 2.05 - this time there were no error messages, thanks. Then I found out that the WebControl jumped back to 2.0.4, updated it to 2.0.7, now everything seems to be right, supper, thanks to everyone involved. Didn't understand what was the cause, but the result is as desired!

@Danal as I said, this is only intended as an additional option. My printer will otherwise have many useful options such as 4-fold extruder changer, endless z-axis (transfer belt), status LEDs, etc. One of the options is supposed to be LCD SLA printing, therefore the effort.

@Danal Yes, I've already read that, of course it's totally exaggerated with the Nanodlp on the Duet. I just wanted to have everything in one device, whether that's the best solution - I don't insist, but as a test.
Thank you for the clarification!!!

@Danal Oh ok, now it's clear, sorry, I forgot the other USB ports. Alright !!!

@bearer ok, and from where and via which port does RPI get power? The other side of the cable is then connected to the power supply? Sorry, I do not understand.

@bearer Sorry, but I didn't understand that. What do you mean with USB A? Standart USB Kable for PC in the Size A? Can you post a picture here to illustrate this? I will create my own thread later, I thought it would be better because the topic was already discussed here.

@bearer that would mean that I supply the RPI from the Duet with power, otherwise RPI has no power connection, except USB

@bearer oh, wait, when I connect RPI to Duet via USB, RPI no longer has its own power supply unit because it was connected via USB.

@bearer I have the power supply for duet via 24V power supply. RPI also has its own power supply. Can I still use this micro USB cable to connect to the RPI to transfer the data from the NanoDLP?

@deckingman Oh, ok, now I understand. Thanks for the explanation!

@ dc42 Hello do I understand correctly that RPI and Duet2 Wifi can be connected via USB? So RPI USB Port is only intended for power supply, or am I wrong? I have RPI3 and RPI4 here, which have different USB ports but the same function as far as I know. So do I need a cable that fits into Duet's USB port on one side and RPI3 / 4 on the other?
Sorry vor my English, i speek German, this is the Google translater...