Cannot boot to bootloader, fastboot or recovery

I have Sony Xperia Z2 with Cyanogenmod 1220150305 I cannot boot into any recovery based applications. I have tried with the phone off and the down and up volume buttons, I have tried with apps that reboot to recovery, I have tried with the advanced power button on CM, I have tried with adb reboot bootloader/recovery and I have tried by just trying to install an update from the CM Updater. What do I do to get this into Recovery? Otherwise the phone is fine, but it now means I can never update the phone ever again which I am not happy about as this version of CM12 is not great.