no connection to MagicMouse
When booting with High Sierra's installer, my Magic Mouse isnt working. I its green light is flashing repeatedly without any connectivity. On screen the mouse and keyboard drawings come up, suggesting to open their power buttons. Very strange because mouse is already "on". If its any help to this mysterious situation, my MagicMouse is a 1st version (with batteries).
iMac 27″, macOS 10.13