So here's a hex-edited mod for the vendor/lib/libcameralight.so and vendor/lib64/libcameralight.so files that changes the call to the chip_torch_set_current() function from chip_torch_set_current(25000) to chip_torch_set_current(65535).
For me everything works great. Tried on G8141 Oreo.
Waiting this day since I bought the Smartphone. Thanks sToRm// :fingers-crossed: I will donate as soon as possible.