Did you just flash the recommended vendor or just vbmeta pls i need help
Yeah, some of the steps here were a little vague; little rusty at it myself
-Got TWRP installed, had to use twrp-3.3.1-46-cepheus-mauronofrio otherwise the contents were encrypted
-Boot into TWRP (power button + volume up)
-Flash fw+vendor_cepheus_xiaomi.eu_multi_9.8.1
-Full wipe
-Reboot into TWRP
-Flash PixelExperience_Plus_cepheus-9.0-20190927-1303-UNOFFICIAL
-I flashed Magisk-v20.0(20000) to root as well
-Reboot system and pixel logo shows up and do the startup etc..
Little worried I was gonna brick my new phone but worked in the end =p