Hi and thanks for quick answer
@Draxzelex
To answer your questions;
1. Well TegraRCMGUI says that I'm on RCM so I suppose it is

/ and on my iMac everything went smooth on injecting also the same on parallels or the PC ( "I saw in some vids online" that a bunch of guys using a jig all the time even when injecting the payload) does this matters? (I used the mazumi method with the screw drive "have the same one as he".
2. iMac 27" 5k late 2015 has the 4 ports USB3 - and I have the cable usb3->usb c /and lots of USB2 cable (I think I will open a USB house

)
3. PC have USB2 ports only and I used TegraRCMSmash (used on all 3 available ports the fourth is for my mouse

)
4. Yes I used Zadig to install the libusb
Yeah but I'm not expecting on buying the TX Modchip

to much expensive here in Portugal, and I prefer challenges