How to update the firmware?
Note: If everything works fine with your keyboard. Please don’t update the firmware. There is a chance it can damage your keyboard.
This firmware does NOT compatible with K2 version 2.
WARNING: ONLY FOR Keychron K2 version 1 US keyboard
Please follow the instructions correctly to flash the firmware.
- Download the correct firmware for your layout (K2 White Backlight/ K2 RGB Backlight ) otherwise, it can break your keyboard.
- Make sure your keyboard is in cable mode. If you flash the keyboard in Bluetooth mode, it will break your keyboard.
- Check that your keyboard is switched to the right OS system. Ex. Switch the keyboard to Windows if you are using a Windows device.
- Make sure your keyboard is connected to the PC with the cable that came with the box only. If you are using a third party cable, please make sure the cable can pass data as some cables can only be used for charging.
- Confirm that only the Keychron keyboard is connected to the PC. If not, it might flash the firmware of other keyboards. If you have multiple Keychron keyboards, please flash the firmware one-by-one, do not plug all the keyboards to the computer at the same time.
- Now, you can start running the exe file for Windows or the app file for the Mac.
- After flashing the new firmware, hold Fn + Z + J together for 5 seconds to do the factory reset. You are now good to go.
Firmware V1.62
What's new in this firmware
- When the update process is completed, a message that says ‘’update successfully’‘ will pop up.
- After flashing this firmware, by default, the first row is the multimedia keys. Pressing fn + f1-f12 is the standard function key. After selecting ‘use F1, F2. Etc keys as standard function keys’ on keyboard setting, it will default to the function key. Press fn + f1-f12 as the multimedia key.
- fn + L + light effect key (the lightbulb key) -- Hold these three keys for 6 seconds to lock the light effect you are currently using. To unlock the light effect, hold these three keys for 6 seconds again. Please hold the fn and L keys first, then hold the light effect key.（Even after turn off the keyboard and turn it on again that feature locking is still available）
If you meet the problem of “App is damaged and can’t be opened. You should move it to the Trash. ” Here are two ways to to fix it.
Method One
1.Download the GateKeeper_Helper.(you can refer to this link and download it.) Completed download and open it. Then open the “GateKeeper_Helper”.
2.You will see five options and ask you enter your choice, now you type 3 and enter, it will show you that “Drag & Drop The App Here Then Hit Return: “, please drop the firmware to the GateKeeper and hit Return and then input your password and click enter, now you will see the [Process completed], done!
Finally, please try to open our firmware again and you should be able to process the firmware update now, thank you.
Method Two
1. Unzip the firmware and move the unzipped firmware to the "Downloads" folder.
2. Open "Terminal" and enter the code below, then enter the password.
sudo xattr -dr com.apple.quarantine ~/Downloads/FIRMWARE FULL NAME.app
eg: for the firmware I downloaded named "K2-V2-84K-white-US-V1.04", I need to enter "sudo xattr -dr com.apple.quarantine ~/Downloads/K2-V2-84K-white-US-V1.04.app"
3. Try to open the firmware again and you should be able to process the firmware update now, thank you.
Firmware V1.6
What's new in this firmware
- fn + Caps Lock + P -- Hold these three keys together for 6 seconds, the Caps Lock key will no longer follow the backlight mode, it will be used to indicate the status of capital/ small letters. This feature was included in the last firmware, but with bugs, this time we have fixed the bug for this feature.
- fn + L + light effect key (the light bulb key) -- Hold these three keys together for 6 seconds, it will lock the light effect you are using now. To unlock the light effect, press these three keys together for 6 seconds again. Please make sure to hold the fn and L key first then hold the light effect key.
- Under the no backlight circumstances, if you press the light effect key, the backlight will be turned on. (We add this because there are too many users send questions to us saying "my backlight is not working." "my keyboard's backlight has dead '', but the reason for it is they accidentally turned off the backlight and forgot to turn it back.
- fn + I + D -- By default, short press del to get del, press fn + del to get insert; Hold these three keys together for 6 seconds, the function of the del key will be reversed to insert. Then the short press the key to get insert, press fn key combination will get the del function. Hold these three keys together for 6 seconds again to change back to the default.
If you meet the problem of “App is damaged and can’t be opened. You should move it to the Trash. ” Here are two ways to to fix it.
Method One
1.Download the GateKeeper_Helper.(you can refer to this link and download it.) Completed download and open it. Then open the “GateKeeper_Helper”.
2.You will see five options and ask you enter your choice, now you type 3 and enter, it will show you that “Drag & Drop The App Here Then Hit Return: “, please drop the firmware to the GateKeeper and hit Return and then input your password and click enter, now you will see the [Process completed], done!
Finally, please try to open our firmware again and you should be able to process the firmware update now, thank you.
Method Two
1. Unzip the firmware and move the unzipped firmware to the "Downloads" folder.
2. Open "Terminal" and enter the code below, then enter the password.
sudo xattr -dr com.apple.quarantine ~/Downloads/FIRMWARE FULL NAME.app
eg: for the firmware I downloaded named "K2-V2-84K-white-US-V1.04", I need to enter "sudo xattr -dr com.apple.quarantine ~/Downloads/K2-V2-84K-white-US-V1.04.app"
3. Try to open the firmware again and you should be able to process the firmware update now, thank you.
Below are the old firmwares from the past
Firmware V1.37
- Under all the system, press Fn+I+D for 3 seconds, the red indicator LED light will flash 3 times, and reverse the function of DEL and Insert. It will perform as DEL key by default and then change to Insert after pressing the shortcut key. Vice versa. And we also add the composite key for Fn+DEL. When pressing the Fn+DEL, DEL will perform as the Insert key and when DEL performs as Insert, pressing the Fn+Insert it will perform as DEL.
- Press Fn+caps lock+p for 3 seconds, the caps lock key will no longer follow the backlight mode, it will be used to indicate the status of capital/ small letters.
- It fixed the issue that under low power mode, the backlight will automatically enter the sleeping mode in one minute. Now it will follow the backlight mode until it runs out of battery.
Add battery level showcase. Pressing Fn+B, if the power above 70%, the charging indicator is green; 30%~70 %, the charging indicator will be blue; when it is under 30%, the charging indicator will keep flashing.
Download the Firmware V1.37 from the following link:
Firmware V1.35
V1.35 has fixed issue that the backlight of Page Up does not flash with other keys.
Firmware V1.3
What changes we have made compare to firmware V1.15?
- Added ‘Fn+ backlight key’ as a shortcut key to control the backlight on/ off.
- Under the ‘always-on’ mode, it shows white light by default.
- Added ‘Fn+ Left arrow’ and ‘Fn + Right arrow’ to adjust RGB backlight, as the schemes would not circulate before.
- Fix the issue that the battery indicator is still on after fully charged.
- Added ‘Fn+ backlight key’ as a shortcut key to control the backlight on/ off.
- Fix the issue that the battery indicator is still on after fully charged.
Firmware V1.15
What changes we have made for V1.15?
- This fixed the firmware bugs for the 2nd batch.
- In Mac/iOS mode, the Del key only activates when releasing the button. Works normally in Win/Android mode.
- For any keyboard shortcuts, please press the Fn first and then press other keys to make it work.