LG G4 LS991 dead boot repair needy

Since 3 months people asking for a solution to solve this phone’s qhs usb dload 9008 issue

And know i think thousands of g4 was dead by flashing the downgraded kdz or tot file

So please anyone have a solution for it so share it please
My phone is ls991 but there is many h815 and h811 also please help us
This is the first lg’s phone which was suckeddd know

I heard that some people do that repair like vungoc mobile and on other Chinese websites and some people also offering to repair it
So there was a solution!!!
it was not impossible so please anyone share it