Thanks for your answer
@CaseySJ ! I firstly tried to put my Samsung 970 EVO plus in an external M.2 case to upgrade the firmwire with a PC and Magician, but the SSD in not visible and I can't do nothing with. It's the same thing plugged in my Mcbook Pro, nothing appears. There is the disk in PC but I can't do anything with it, even if I try tor erase it with "PC Utility". The only time I can do anything with the SSD it's when it's internal and erasable with the USB boot of my hackintosh.
And I already read the tuto that you linked, but don't understand where to find "the Samsung Firmware Utility ISO file in Diskimage ISO"... I have to download it ?