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  1. Keychron | Support Center
  2. Product Support
  3. General Keyboard Product Support

General Keyboard Product Support

All about keyboard general technical issues.

  • I’ve flashed the Bluetooth firmware. Can I use the QMK Toolbox to flash the firmware? Will it erase the fixed Bluetooth firmware?
  • Why did it fail to flash the firmware through QMK Toolbox?
  • The F1-F12 keys are acting strange, nothing happens when I press them one at a time. However, they do work when I press multiple (such as F1 and F2 at the same time).
  • Is the USB plugin cable for the motherboard slot USB 2.0 or USB 3.0? What about the coiled aviator cable adapter?
  • Holding the Fn key by itself on Mac should bring up an emoji selection box. It doesn't work on the QMK keyboard.
  • What do the "BL Toggle" and "Wake" buttons in VIA mean?
  • Why is a letter spamming or typing delayed?
  • What is the difference between "Carbon Black A" and "Carbon Black B"?
  • I need to fully remove the keyboard Drive from my PC. How can I do that?
  • The website advertised the polling rate at 1000hz. However, my unit is not. Is there firmware that can fix this? Please advise.
  • Does the USB Bluetooth dongle work in HID proxy mode to allow Keychron Bluetooth keyboards to work in the BIOS menu?
  • Is the gold-plated PCB mounted stabilizer set by Durock or Gateron?
  • Why is the space bar not made by double-shot technology on the "Double Shot PBT OSA Full Set Keycap Set?
  • Are red switches on your keyboards pre-lubed?
  • What is the height of the keycap profile used for the Keychron keyboards?
  • The function keys (F1~F12) work perfectly on my Mac. But when I opened Karabiner, these keys stopped working. The fn + K + C combo didn't help. What should I do?
  • My keyboard works fine on my Windows Pro. But I keep getting the attached messages when plugging it in. How do I address this issue?
  • Do your keyboards come with a default polling rate of 1000Hz?
  • Somehow the backlight effect increased the speed of my keyboard. I don't know how to slow down the speed effect again. Can you help me, please?
  • How can I check my keyboard firmware version on a Windows device?
  • Can I get a firmware update of my keyboard to support one-hour idle time?
  • I am unable to connect via Bluetooth and keep getting this "connection rejected" error message on my computer. What should I do?
  • Do the Keychron keyboards work with Linux/ChromeOS/Ubuntu?
  • I'm thinking about Japan Technical Conformity Certified Bluetooth Keyboard. Which devices are certified?
  • I am not sure if I have selected the correct layout. How can I check?
  • One key does not work/register/input properly. Keystrokes are very delayed/repeat randomly/have a huge lag/latency. It occurs both in wired and Bluetooth mode.
  • When booting my Mac which has a Windows Bootcamp, my keyboard does not work and I can't get into the startup manager. What should I do?
  • Every time I turn my Mac Mini back on, It requires a password to start it up. My keyboard isn't working and connecting to it. What should I do?
  • My keyboard is not working. I keep receiving an error message saying "USB device not recognized" by my Windows PC. What should I do?
  • My keyboard does not work in cable mode. What should I do?
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