Hi, the new flanger device is the standard “flanger” in renoise 3.1 - it is a bit confusing, because the old was named the same in 3.0. You’ll see the difference in the filter list, the new 3.1 filter has analog filters and distortions, a vowel filter in between - the old 3.0 flanger has a lot of moog and eq filters in the list. When you copy & paste the text from the spoiler to the effects lane there will be one instance, and you need to make a doofer preset from it (or use the special tool) to make it accessable via the effects browser.
I suggest you look at this thread: https://forum.renoise.com/t/using-deprecated-renoise-dsp-devices/27727 - the tut (IDK which you mean) will probably also use other deprecated effects, like filters, chorus. If you need the old 3.0 modulation filters in the instrument settings, there should be a preset “old filters” or so for backwards compatibility.
Other than that the new filters, chorus/flanger and modulations are quite a step up from the old, especially the filters.