TC75 - nonGMS to GMS update ?

I cannot change image from nonGMS to GMS (TC75)

I've already installed T75N0LXXVRGEF21002.zip with T75N0L50VRPEF21002.zip, then

install from recovery mode T75N0LXXVRFXX21002.zip or T75N0LXXVREXX21002.zip (reset),

then I'm trying to install

T75N0LXXARGEF21002.zip but I error appear:

e:footer is wrong

e:signature verefication problem

ro.system.sdram is set to TC75DV11

what step is missing to succesfully apply GMS image?