If you facing some troubles using your brand new MotoSpeed CK62 on a Mac OS X, you can use Karabiner app together with this custom key bindings to make your life easier!

customCK62MacOSx.json

{
  "title": "Motospeed CK62 layer fix",
  "maintainers": ["Leonardo Saragiotto"],
  "homepage": "https://gist.github.com/saragiotto/48d173d9bf4895e0d25389d5a5d7b75e",
  "import_url": "karabiner://karabiner/assets/complex_modifications/import?url=https://gist.githubusercontent.com/saragiotto/48d173d9bf4895e0d25389d5a5d7b75e/raw/1a46faaaf0c4f66079e4efecc14a9ef793fc4dff/customCK62MacOSx.json",
  "rules": [
    {
      "description": "Fix ? key, forward delete and alt tab for windows and tilde accent",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "up_arrow",
            "modifiers": {
              "mandatory": [
                  "left_alt"
              ],
              "optional": [ 
                  "left_shift" 
              ]
            }
          },
          "to": [
            {
              "key_code": "slash"
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "comma",
            "modifiers": {
              "mandatory": [
                  "left_alt"
              ]
            }
          },
          "to": [
            {
              "key_code": "delete_forward"
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "escape",
            "modifiers": {
              "mandatory": [
                  "left_command"
              ]
            }
          },
          "to": [
            {
              "key_code": "grave_accent_and_tilde",
              "modifiers": [ "left_command" ] 
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "z",
            "modifiers": {
              "mandatory": [
                  "left_alt"
              ]
            }
          },
          "to": [
            {
              "key_code": "mute"
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "x",
            "modifiers": {
              "mandatory": [
                  "left_alt"
              ]
            }
          },
          "to": [
            {
              "key_code": "volume_decrement"
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "c",
            "modifiers": {
              "mandatory": [
                  "left_alt"
              ]
            }
          },
          "to": [
            {
              "key_code": "volume_increment"
            }
          ]
        }
      ]
    }
  ]
}

Where one should put this file?

Also, did you managed to reprogram this keyboard to use FN as a toggle, to void their strange desition to use permanent toggling?

@gameformush ~/.config/karabiner/assets/complex_modifications. More details here.