[Moto X4 Questions & Answers] tuliusy2k:
What is that about SLOTS?

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C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash boot boot.img

target reported max download size of 536870912 bytes

sending 'boot' (20625 KB)...

OKAY [ 0.443s]

writing 'boot'...

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 0.898s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system system.img_sparsechunk.0

target reported max download size of 536870912 bytes

sending 'system' (516148 KB)...

OKAY [ 11.173s]

writing 'system'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 11.214s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system system.img_sparsechunk.1

target reported max download size of 536870912 bytes

sending 'system' (523975 KB)...

OKAY [ 11.435s]

writing 'system'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 11.491s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system system.img_sparsechunk.2

target reported max download size of 536870912 bytes

sending 'system' (520973 KB)...

OKAY [ 11.452s]

writing 'system'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 11.478s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system system.img_sparsechunk.3

target reported max download size of 536870912 bytes

sending 'system' (523236 KB)...

OKAY [ 11.359s]

writing 'system'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 11.410s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system system.img_sparsechunk.4

target reported max download size of 536870912 bytes

sending 'system' (522092 KB)...

OKAY [ 11.749s]

writing 'system'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 11.811s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system system.img_sparsechunk.5

target reported max download size of 536870912 bytes

sending 'system' (487698 KB)...

OKAY [ 10.948s]

writing 'system'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 11.020s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system system.img_sparsechunk.6

target reported max download size of 536870912 bytes

sending 'system' (524133 KB)...

OKAY [ 11.402s]

writing 'system'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 15.010s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system system.img_sparsechunk.7

target reported max download size of 536870912 bytes

sending 'system' (222582 KB)...

OKAY [ 5.077s]

writing 'system'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 5.138s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash system_b system_other.img

target reported max download size of 536870912 bytes

sending 'system_b' (134369 KB)...

OKAY [ 3.007s]

writing 'system_b'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 3.080s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot flash oem oem.img

target reported max download size of 536870912 bytes

sending 'oem' (210797 KB)...

OKAY [ 4.642s]

writing 'oem'...

(bootloader) *****************************************************

(bootloader) WARNING: OEM images are required in the LOCKED state.

(bootloader) Flashing images can result in a non-boot condition.

(bootloader) Flash a proper OEM signed boot.img first.

(bootloader) *****************************************************

(bootloader) flash permission denied

FAILED (remote failure)

finished. total time: 4.721s

C:\Users\tulio\OneDrive\Escritorio\MotoX4 8.1.0 OPWS28.46-21-9 - adb_fastboot[moto x4](3)>fastboot oem fb_mode_clear

...

OKAY [ 0.046s]

finished. total time: 0.047s

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