The tool by Cakku is here https://github.com/Cakku/ElonaPlusEN
But only working on 2.01 (I think, I didn,'t try to run it on latest version). Thanks for the help!
Do someone also know how to enable cutscenes in English version? I tried decompiling the .exe following those instructions, but they are probably outdated (can decompile just fine but not find and delete the check that triggers the disabling of cutscenes…)