bricked hikvision

Hi to all, i am wondring if anyone could help me. I read the whole day threads about a.m. camera and tried a lot but i can't revive it. Stupid me, thought i can upgrade the cam (month ago - can't remember what version)...it came stock with 5.3.0 played around with tftp downgrade to 5.3.0...

First post so if posted in wrong area please fee free to move to correct.. Let me start out by stating that I am no Jedi master but I do have a understanding to some degree of how the Hikvision ipcams work.. As a way to create a even better understanding, I will sometimes purchase Chinese...