Connection steps and procedures to follow:
1/ Slide the toggle switch to the Bluetooth side.
2/ Keep holding fn1 + Q (or fn + 1) until the Bluetooth indicator light flashes repeatedly.
3/ Turn on Bluetooth search on your device to search the keyboard and connect.
Bluetooth connection video https://www.youtube.com/watch?v=dfpPgSweBMo
If your keyboard is still unable to connect via Bluetooth, you may try the following solutions:
(1) Please try a wall charger for 6~8 hours to make sure your keyboard has enough battery.
(2) Factory reset your keyboard: hold fn (or fn1) + Z + J at the same time for 4 seconds.
(3) Power cycle all devices, including computers and keyboards.
(4) Update your Mac to the latest software version.
(5) Disable the auto-sleep mode on the keyboard by holding fn (or fn1) +S+O for 4 seconds.
(6) Uncheck "Allow the computer to turn off the keyboard to save power" in power management under the device manager. (Windows PC)
(7) Check Mac’s Wi-Fi and Bluetooth interference: https://support.apple.com/en-us/HT201542
(8) Try the Bluetooth connection with other devices (such as your phone, tablet, iPad, etc,) to check if it works. Normally, if Bluetooth works fine with other devices, the keyboard should be fine.
(9) Try to pair with other channels by holding fn+2/3 (fn1+W/E for K6 and K12).
(10) Update the Bluetooth firmware If it's still possible for your keyboard to connect to your device: https://www.keychron.com/pages/bluetooth-firmware （for Windows PC）
(11) Reset the Bluetooth drivers on your PC.
(12) Use a Bluetooth dongle/antenna.
If you are still experiencing connection issues, please contact us at support@keychron.com and our support team will reply to you within 48 hours.
In your email to our Support Team, please provide the following details so our support team can help you as fast as they can, thank you:
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Order number
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Order email
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A photo, video, or related information showing the issue