[Nexus 6 Q&A, Help & Troubleshooting] johnboyinfl@gmail.com:
Microsoft Windows [Version 10.0.14393]

(c) 2016 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>cd C:\Program Files (x86)\Android\android-sdk\platform-tools\

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot devices

ZX1G325LRV fastboot

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot erase boot

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:boot: not found

erasing 'boot'...

(bootloader) Erase allowed in unlocked state

(bootloader) Failed to erase partition

FAILED (remote failure)

finished. total time: 0.005s

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot erase cache

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:cache: not found

******** Did you mean to fastboot format this ext4 partition?

erasing 'cache'...

(bootloader) Failed to erase partition

FAILED (remote failure)

finished. total time: 0.005s

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot erase recovery

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:recovery: not found

erasing 'recovery'...

(bootloader) Erase allowed in unlocked state

(bootloader) Failed to erase partition

FAILED (remote failure)

finished. total time: 0.006s

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot erase system

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

erasing 'system'...

(bootloader) Erase allowed in unlocked state

(bootloader) Failed to erase partition

FAILED (remote failure)

finished. total time: 0.006s

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot erase userdata

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:userdata: not found

******** Did you mean to fastboot format this ext4 partition?

erasing 'userdata'...

(bootloader) Failed to erase partition

FAILED (remote failure)

finished. total time: 0.004s

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot flash bootloader bootloader-shamu-moto-apq8084-72.01

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:bootloader: not found

error: cannot load 'bootloader-shamu-moto-apq8084-72.01'

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot reboot bootloader

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

rebooting into bootloader...

OKAY [ 0.002s]

finished. total time: 0.002s

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot flash radio radio-shamu-d4.01-9625-05.42+fsg-9625-02.113

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:radio: not found

error: cannot load 'radio-shamu-d4.01-9625-05.42+fsg-9625-02.113'

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot flash system.img

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

unknown partition 'system.img'

error: cannot determine image filename for 'system.img'

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot flash boot boot.img

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:boot: not found

error: cannot load 'boot.img'

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot flash recovery recovery.img

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:recovery: not found

error: cannot load 'recovery.img'

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot flash cache cache.img

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:cache: not found

error: cannot load 'cache.img'

C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot reboot

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

rebooting...

finished. total time: 0.002s

C:\Program Files (x86)\Android\android-sdk\platform-tools>