Hi Sanum123 to instal Marvel os v-2 you dont need to create vendor(64bits) because its a 32 bits_blinder64 and works on j7 2017 official vendor .
installation steps
1.install TWRP or Ofox recovery ;
2.Move this room to your SD card or internal storage (not recomanded);
*if you created a 64 bits vendor you need to revert it back to 32 bits ;
3.clear data , system,vendor,dalvik /cache , not the sd card ...
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