H818P and H955 dead after flash

hi for all
am have 2 devices lg g4 H818P and g flex 2 H955 dead after flash by octopus software… from first tow devices hang LG logo after flashed dead completely cant enter emergency mode just black screen but with holding both vol +and – and power for 5 sec just show device bar code with imei … is this devices need repair boot or can flashing it by another way please help team …….


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