This is also described on the wiki. Next time you will ask something that's obviously written on the wiki, I won't respond.Thanks for sending
I have followed these steps mention below
1.power off the mobile .
2.press vol down & power for goes fastboot mode
3.open platform-tools_r33.0.2-windows.zip at Pc.
4. Install vbmeta file (fastboot flash vbmeta vbmeta.img) its install successfully .
5.Install dtbo file (fastboot flash dtbo dtbo.img) its install successfully.
6. Download recovery file of pixel 12.1 and i rename the file is recovery and flash at fastboot (fastboot flash recovery recovery.img) its give error see the picture ....
please guide me which step am i missing ....