Clock 66 Firmware Update

The new firmware version 2.5 update further improves radar accuracy and consistency and should be installed on all Clock 66 chronographs. To detect your firmware version, hold the back button in and depress the trigger at the same time to enter programming mode. The firmware version will show in the bottom right corner. 

To update your firmware via Apple or Android, follow these steps:

1.  Download the Clock 66 Firmware Update (do not extract the zip file) 

2. Download nRF Connect software on your mobile phone.

Apple: 
https://apps.apple.com/tw/app/nrf-connect-for-mobile/id1054362403

Important note:  Do not release the trigger during the update process. Wait until the status bar reaches 100% before releasing the trigger.


Android 
https://play.google.com/store/apps/details?id=no.nordicsemi.android.mcp&hl=en&pli=1
Important note:  Do not release the trigger during the update process. Wait until the status bar reaches 100% before releasing the trigger.