[Pixel C Q&A, Help & Troubleshooting] jatilq:
Thank for replying.

Keep in mind When I click [Reboot into Android Recovery] it only reboots to the bootloader I've included a picture of that.

jatilq$ ./fastboot flashing lock

...

OKAY [ 3.963s]

finished. total time: 3.963s

jatilq$ ./fastboot flashing unlock

...

OKAY [ 2.306s]

finished. total time: 2.306s

jatilq$ ./fastboot boot twrp.img

< waiting for any device >

creating boot image...

creating boot image - 13035520 bytes

downloading 'boot.img'...

OKAY [ 0.369s]

booting...

FAILED (remote: image verification failed)

finished. total time: 0.372s

jatilq$ ./fastboot oem lock

...

OKAY [ 23.284s]

finished. total time: 23.284s

jatilq$ ./fastboot oem unlock

...

OKAY [ 2.683s]

finished. total time: 2.683s

jatilq$ ./fastboot flash bootloader bootloader-dragon-google_smaug.7900.67.0.img

target reported max download size of 268435456 bytes

sending 'bootloader' (16384 KB)...

OKAY [ 0.480s]

writing 'bootloader'...

FAILED (remote: unsupported command)

finished. total time: 0.482s

It finishes about 5 min after 'archive does not contain system.sig

jatilq$ ./fastboot -w update image-ryu-n2g48b.zip

target reported max download size of 268435456 bytes

archive does not contain 'boot.sig'

archive does not contain 'recovery.sig'

archive does not contain 'system.sig'

archive does not contain 'vendor.sig'

wiping userdata...

Creating filesystem with parameters:

Size: 57825820672

Block size: 4096

Blocks per group: 32768

Inodes per group: 8192

Inode size: 256

Journal blocks: 32768

Label:

Blocks: 14117632

Block groups: 431

Reserved block group size: 1024

Created filesystem with 11/3530752 inodes and 267682/14117632 blocks

wiping cache...

Creating filesystem with parameters:

Size: 419430400

Block size: 4096

Blocks per group: 32768

Inodes per group: 6400

Inode size: 256

Journal blocks: 1600

Label:

Blocks: 102400

Block groups: 4

Reserved block group size: 31

Created filesystem with 11/25600 inodes and 3310/102400 blocks

--------------------------------------------

Bootloader Version...: Google_Smaug.7900.50.0

Baseband Version.....: N/A

Serial Number........: unknown variable

--------------------------------------------

checking product...

OKAY [ 0.002s]

checking version-bootloader...

OKAY [ 0.002s]

checking partition-size:system...

OKAY [ 0.016s]

erasing 'boot'...

FAILED (remote: unsupported command)

finished. total time: 0.029s

./fastboot flash boot recovery.img

target reported max download size of 268435456 bytes

erasing 'boot'...

FAILED (remote: unsupported command)

finished. total time: 0.001s

These are most of the commands I've tried. This is on my mac. The windows machine SKipSoft will say it's unlocked, but during flashing will throw back that it's locked (bootloader reports unlocked)

I included photos to show it does say it locks/unlocks.

I contacted Google and that was a disturbing experience. Both times you can tell support is reading from a script. They both promised someone from 2 tier would contact me, so far nothing. I'm willing to pay to have the thing repaired, but sadly you need the 2nd tier person to call you to even find out if that's possible.