[Feature] Update documentation with fastboot -w

[TheDauntless]

Is your feature request related to a problem? Please describe.

Flashing a kernel might not work if the kernel has been updated/restored in the past. Running fastboot -w before flashing the kernel solves the issue. I tried dozens of different approaches for a Pixel 7a (including many factory restores/reflashes) and the only thing that worked eventually was running fastboot -w before flashing kernelsu.

Describe the solution you'd like.

Update the website and add fastboot -w as an (optional?) step in case the kernel isn't loaded correctly.

Describe alternatives you've considered.

NA

Additional context

No response

[tiann]

Did you try the magiskboot way?

[Fede2782]

If you are referring to the fact that a factory reset is required in my Samsung devices i always had to do factory reset (like fastboot -w) the first time KernelSU was installed otherwise wouldn't boot.