It didn´t work.
I flashed the TWRP from OP without errors but the old TWRP is booting.
At the moment is the Flashable_SGP512_23.5.A.1.291_VMo_AU-NZ_by_kulvertti.zip installed. This Image has the TWRP from Z3.
Sorry for my english
Has anybody a boot.img for me.
I think, i must flash the boot.img and the TWRP-image from OP.