I've tried to root my bush spira b4 with kingroot, kingo root pc, framaroot and i have had no luck. Then, i tried making my own custom recovery but it required a boot.img file. I tried backing up my rom to get the file but it said it couldn't as ii have an unkown rom structure. Other methods require root which i don't have. I searched for custom roms, stock roms, recoveries, but nothing comes up. please help! 
