I have an
Apple Wireless Keyboard MC184LL/B which I use infrequently, but was using today (on a non-Apple machine).
I attempted to connect it to a new device, unsuccessfully, and now I cannot seem to use it on the original machine or on my MacBook Pro Early 2011 running OS X 10.11. (The MacBook Bluetooth is OK as I can connect to other devices.)
The MacBook sees it, and says "connecting" when I press the pair control, but always fails with
Couldn't connect to the device.
I have always found this device frustrating; it came with almost no instructions and there seems to be no on-line manual, although there is a similar keyboard with 3 batteries rather than 2.
When I press the power the green light comes on for a few seconds then goes off.
I possible broke it by attempting to connect without pairing from the new device.
Is there anyway I can reset the keyboard to factory default.