[Q] n9005 bootloop with Blue LED topic

i got the phone off someone, turns out they had tried to flash the leaked lollipop rom gbnl8, but got bootloop. i was able to reflash gng1 4.4.2 rom. but the bootloop is still there at the samsung logo. i hear the sound but not it just restarts, and there's a blue led light on.

can anyone help me get this device working again?

cheers in advance