Root android after OTA from 4.4 to 4.4.2

After an OTA upgrade from 4.4 to 4.4.2 SuperSU told me that it can’t root my device and I should consult internet. My recovery was overwritten by the update. So I reflashed my openrecovery image I used in my last post in this category and downloaded SuperSU from http://download.chainfire.eu/351/ and laid it to my sdcard. After a reboot into the custom bootloader I installed the zip file from flash and rebooted into my rooted android 4.4.2.