If the APK version fails, try the iRoot for PC version. Connecting your phone via USB often provides a more stable connection for the rooting script to execute. Security Warning
If iRoot fails to root your KitKat device, consider these alternatives: Download Iroot Apk For Android 4.4.2
No – Android 4.4.2 is typically 32-bit. iRoot ARMv7 works fine. If the APK version fails, try the iRoot for PC version
For a user on Android 4.4.2, iRoot offers: If the APK version fails