Hey @Alihan94 , I suppose your phone is one of the Korean variants whose last letter should be K,L, or S. Did you say your phone could not boot up after flashing the ROM? In case you did not take any actions with your phone since then, I have some suggestions for you as below. 1. Flash the "stock ROM" using KDZ application (this will relock your bootloader) 2. Root your phone as you know how to do. 3. Follow this link to get recovery apk file to install to your phone. 4. Follow instructions of this topic owner to flash the ROM at thread #1. Do as I say, your phone should boot up appropriately. Otherwise, feel free to PM me for assistance. Good luck.