nexus 4 e 960 16 gb bricked help

Hi team after a ota update to 4.3 my phone loop brick .ihave reflash with a 4.2.1 by octopus box firmware by support but imei unknow and baseband unknow ...i have update with LGE960AT-00-V10e-NXS-DEC-17-2013-KOT49H-USER+0.oct but loop ...not start up.. i have make a wipe reset but still same .....i have flash a 4.2.1 and i have repair nvm ...security ...reset sicurity ... repair imei but nothing ..... Please help me (my phone lge960 black 16gb US):o:confused::confused::confused:

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