S6 920F stuck at first boot screen

Hi everyone my story goes like this...

im currently on axism rom which is lollipop 5.0.2 and i wanted to go to 'xtrestolite deo-dexed rom' which is lollipop 5.1.1 and noticed i needed to flash bootloader and modem for 5.1.1 so i did this using odin and now it will not boot i now realise that it says this will not work with a stock kernel which im geussing the axism rom has so how do i get myself out of this mess any help asap would be greatly appreciated