I would also like to root my device, but I am currently unable to flash the vbmeta image. Is it possible to use EDL mode to root the device? Additionally, the Fastboot screen indicates that Secure Boot is enabled.
Code:
fastboot --disable-verity --disable-verification flash vbmeta_a vbmeta_a.img
Rewriting vbmeta struct at offset: 0
Sending 'vbmeta_a' (64 KB) OKAY [ 0.002s]
Writing 'vbmeta_a' FAILED (remote: 'Unrecognized command flash')
fastboot: error: Command failed