OnePlus One(OPO) hard bricked and blank screen after color os installation

used lineage os and tried to update twrp.
device got hard bricked ie no logo no recovery no os no fastboot
Tried color OS(807MB) installing. and got blank screen
but after drivers installed device is showing as'Qualcomm HS QDloader 9008' instead of QS****BULK.
.ie device recognised by my win10 laptop.

please help me with the steps to unbrick my phone and required links

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