They change their site and file availbility a lot
I know they had manuals for every product on their site, but not sure where to tell users to go now.
I used to be able to provide near step by step steps from memory.
Hold the E17 in your hand so that the E17 or Alpen silkscreen is facing your palm. The OLED screen will be in the top facing you. Now feel around the screen and move thy thumb to the right side. Bingo.
But seriously no, I just like to help people out.