Unhappy [Q] need help :(

hey help plz i was running a stock android 4.1.2 on my n7100 rooted with CWM and note2core kernel and everything was smooth when i was trying to flash phoenix rom it doesnt boot just enters recovery but i restored my nandroid backup a user here on xda told me that i should flash mj5 bootloader and twrp i did that but still the same problem but my internal sd was formatted for now reason and lost my backup when i downloaded stock rom to flash in odin i always get an error i cant flash it a user told me to download mdg1 firmware but now hotfile is down i cant download from samfirmware i took my phone to professional repair shop which is a friend of mine he said that my boot is dead it may be fixable or it may be not so plzzz any suggestions ???