Custom boot logo, "freezing" the screen
I read here that raw.BootImg.img was used as the boot logo. How could it be changed ? I would like to include a custom image. I guess I could convert it with imagemagick tools, but I wonder where it has to be put to replace the default one, or if a script could help me do that.
Another question : sometimes I keep a page opened for a long time - like 10 minutes, sometimes more. Is there a way to map a button do a freeze of the screen, ie go into suspend mode but without blanking the screen?
I saw options in PRScustomizer to turn the device off ("enter key shutdown", but I would like instead to map it to freeze.
If that's not possible, I'd like to turn off screen blanking on suspend, so that it would work the same way.
Any help is appreciated.