[Nexus 6 Q&A, Help & Troubleshooting] Symnonymous:
C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot -w

flash bootloader bootloader-shamu-moto-apq8084-71.08.img

target reported max download size of 536870912 bytes

Creating filesystem with parameters:

Size: 59743535104

Block size: 4096

Blocks per group: 32768

Inodes per group: 8176

Inode size: 256

Journal blocks: 32768

Label:

Blocks: 14585824

Block groups: 446

Reserved block group size: 1024

Created filesystem with 11/3646496 inodes and 274946/14585824 blocks

Creating filesystem with parameters:

Size: 268435456

Block size: 4096

Blocks per group: 32768

Inodes per group: 8192

Inode size: 256

Journal blocks: 1024

Label:

Blocks: 65536

Block groups: 2

Reserved block group size: 15

Created filesystem with 11/16384 inodes and 2089/65536 blocks

sending 'bootloader' (3807 KB)...

OKAY [ 0.131s]

writing 'bootloader'...

(bootloader) flashing partition ...

(bootloader) This may take a few seconds if a

(bootloader) different partition table is being

(bootloader) flashed since we need to backup

(bootloader) and restore a few partitions

(bootloader) Flashing primary GPT image...

(bootloader) Flashing backup GPT image...

(bootloader) Failed to write EFI backup GPT header.

(bootloader) Failed to flash partition

FAILED (remote failure)

finished. total time: 0.425s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot reb

oot

rebooting...

finished. total time: 0.003s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot -w

flash radio radio-shamu-d4.0-9625-02.95.img

target reported max download size of 536870912 bytes

Creating filesystem with parameters:

Size: 59743535104

Block size: 4096

Blocks per group: 32768

Inodes per group: 8176

Inode size: 256

Journal blocks: 32768

Label:

Blocks: 14585824

Block groups: 446

Reserved block group size: 1024

Created filesystem with 11/3646496 inodes and 274946/14585824 blocks

Creating filesystem with parameters:

Size: 268435456

Block size: 4096

Blocks per group: 32768

Inodes per group: 8192

Inode size: 256

Journal blocks: 1024

Label:

Blocks: 65536

Block groups: 2

Reserved block group size: 15

Created filesystem with 11/16384 inodes and 2089/65536 blocks

sending 'radio' (85422 KB)...

OKAY [ 2.762s]

writing 'radio'...

(bootloader) flashing modem ...

(bootloader) flashing mdm1m9kefs1 ...

(bootloader) flashing mdm1m9kefs2 ...

(bootloader) flashing mdm1m9kefs3 ...

(bootloader) flashing versions ...

(bootloader) Failed to flash partition versions

(bootloader) Failed to flash versions

FAILED (remote failure)

finished. total time: 3.316s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot reb

oot

rebooting...

finished. total time: 0.000s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot -w

flash boot boot.img

target reported max download size of 536870912 bytes

Creating filesystem with parameters:

Size: 59743535104

Block size: 4096

Blocks per group: 32768

Inodes per group: 8176

Inode size: 256

Journal blocks: 32768

Label:

Blocks: 14585824

Block groups: 446

Reserved block group size: 1024

Created filesystem with 11/3646496 inodes and 274946/14585824 blocks

Creating filesystem with parameters:

Size: 268435456

Block size: 4096

Blocks per group: 32768

Inodes per group: 8192

Inode size: 256

Journal blocks: 1024

Label:

Blocks: 65536

Block groups: 2

Reserved block group size: 15

Created filesystem with 11/16384 inodes and 2089/65536 blocks

sending 'boot' (7681 KB)...

OKAY [ 0.241s]

writing 'boot'...

OKAY [ 0.069s]

erasing 'userdata'...

OKAY [ 0.010s]

sending 'userdata' (141063 KB)...

OKAY [ 4.517s]

writing 'userdata'...

OKAY [ 0.973s]

erasing 'cache'...

OKAY [ 0.007s]

sending 'cache' (6248 KB)...

OKAY [ 0.207s]

writing 'cache'...

OKAY [ 0.039s]

finished. total time: 6.072s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot fla

sh recovery recovery.img

target reported max download size of 536870912 bytes

sending 'recovery' (8273 KB)...

OKAY [ 0.276s]

writing 'recovery'...

OKAY [ 0.053s]

finished. total time: 0.330s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot fla

sh system system.img

target reported max download size of 536870912 bytes

sending sparse 'system' (522112 KB)...

OKAY [ 18.419s]

writing 'system'...

OKAY [ 3.259s]

sending sparse 'system' (510197 KB)...

OKAY [ 18.074s]

writing 'system'...

OKAY [ 3.206s]

sending sparse 'system' (515601 KB)...

OKAY [ 18.729s]

writing 'system'...

OKAY [ 3.346s]

sending sparse 'system' (188485 KB)...

OKAY [ 6.604s]

writing 'system'...

OKAY [ 1.167s]

finished. total time: 72.851s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot fla

sh cache cache.img

target reported max download size of 536870912 bytes

erasing 'cache'...

OKAY [ 0.000s]

sending 'cache' (6248 KB)...

OKAY [ 0.218s]

writing 'cache'...

OKAY [ 0.038s]

finished. total time: 0.258s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>fastboot fla

sh userdata userdata.img

target reported max download size of 536870912 bytes

erasing 'userdata'...

OKAY [ 0.016s]

sending 'userdata' (138868 KB)...

OKAY [ 4.469s]

writing 'userdata'...

OKAY [ 0.903s]

finished. total time: 5.388s

C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data>