Manual CyanogenMod Image Update with Apps Backup by TitaniumBackup

• Backup all apps and data and create a update.zip for TWRP with TitaniumBackup.
• Reboot phone into fastboot mode.
• Boot TWRP:
  sudo fastboot boot twrp-lux-3.0.0-r2.img
• Backup current image.
• Browse phone by MTP to the location where the files created by TitaniumBackup and TWRP are stored and copy them on your PC.
• Store the new CyanogenMod image zip on the phone.
• Install the new image by TWRP 
• Install the update.zip by TWRP
• Phone reboots automatically?