A few days ago the ota upgrade to Kit Kat 4.4.2 for the Droid RAZR HD was leaked. The link to the firmware was posted to xda on May 10th. There are no install directions to go with the link at all. Normally with firmware leaks you will need to return your device to 100% stock. This means that if you are rooted and have removed bloat ware you will need to restore your bloatware apps. If you have modified any system apks or if you have modified the stock rom in any way you will need to revert any changes to stock. You must be running the stock recovery. You will not be able to install the leaked firmware with safestrap or any other custom recovery. It should also be noted that this build is for the Verizon variant only. Download the leaked update from the link below.
Via XDA
Via XDA