How to change device model in build.prop?

The following is my build.prop file. I just can't find the device model option so I can modify it. I'm trying to change my device model to Pixel XL so I can run Google Assistant properly. # begin build properties # autogenerated by buildinfo.sh ro.build.id=NMF26V ro.build.display.id=lineage_titan-userdebug 7.1.1 NMF26V 399d12a5d9 ro.build.version.incremental=399d12a5d9 ro.build.version.sdk=25 ro.build.version.preview_sdk=0 ro.build.version.codename=REL ro.build.version.all_codenames=REL ro.build.version.release=7.1.1 ro.build.version.security_patch=2017-01-05 ro.build.version.base_os= ro.build.date=Tue Jan 31 23:31:20 PST 2017 ro.build.date.utc=1485934280 ro.build.type=userdebug ro.build.user=jenkins ro.build.host=phenom.zifnab.net ro.build.tags=release-keys ro.build.flavor=lineage_titan-userdebug ro.product.brand=motorola ro.product.name=lineage_titan ro.product.board=MSM8226 # ro.product.cpu.abi and ro.product.cpu.abi2 are obsolete, # use ro.product.cpu.abilist instead. ro.product.cpu.abi=armeabi-v7a ro.product.cpu.abi2=armeabi ro.product.cpu.abilist=armeabi-v7a,armeabi ro.product.cpu.abilist32=armeabi-v7a,armeabi ro.product.cpu.abilist64= ro.product.manufacturer=motorola ro.product.locale=en-US ro.wifi.channels= ro.board.platform=msm8226 ro.build.characteristics=default ro.cm.device=Pixel XL # end build Update: I have further changed the manufacturer and brand to Google and the product to Pixel XL, but it still had no effect.