I finally figured this out and got root. You need to flash the patched boot image file after you flash the vbmeta.img with --disable-verification.
Here are the steps I did to get root.
- Copied boot.img from the firmware to my device.
- Downloaded Magisk Manager. (The regular version, no need for the canary version).
- Patched the boot.img with magisk manager.
- Clicked on
Install on the righthand top in magisk manager.
- Clicked on
Next Righthand top.
Select and Patch a File.
- picked the boot.img file I had copied in step 1. Magisk manager patched the file.
- Copied the patched file pack to my PC.
- Booted into Fastboot.
- (Flashed the patched boot image to my device
fastboot flash boot path-to-patched-boot-image) I don't think this is needed here but it is what I had done.
- Flashed the vbmeta.img from the firmware with the option --disable-verification.
fastboot --disable-verification flash vbmeta path-to-vbmeta-imageIt does not need to be an empty vbmeta image.
- Flashed the patched boot image to my device
fastboot flash boot path-to-patched-boot-image. (A second time, but as mention before I don't think the first time is necessary).
- fastboot reboot.
...And now I have root.
Disclaimer use this info at your own risk. I take no responsibility for it.