I keep getting a No OS installed error on twrp. Yesterday I install a 5.03.651.3 rooted rom through TWRP. I think I deleted the wrong files so I installed a stock 4.06.651.4 from a ruu then I did a ota update to 4.06.651.9. After that I unlocked the bootloader and installed TWRP 18.104.22.168. I have done noting more after that. Can someone please help me fix this problem?