[Moto G4 Plus Questions & Answers] jadeilson777:
I'm getting these errors

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash partition gpt.bin

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:partition: not found

target reported max download size of 536870912 bytes

sending 'partition' (32 KB)...

OKAY [ 0.024s]

writing 'partition'...

(bootloader) Flashing primary GPT image...

(bootloader) Flashing backup GPT image...

OKAY [ 0.111s]

finished. total time: 0.138s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash bootloader bootloader.img

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:bootloader: not found

target reported max download size of 536870912 bytes

sending 'bootloader' (3651 KB)...

OKAY [ 0.158s]

writing 'bootloader'...

(bootloader) validating: bootloader.default.xml ...

(bootloader) will pass: flash:aboot

(bootloader) will pass: flash:rpm

(bootloader) will pass: flash:tz

(bootloader) will pass: flash:hyp

(bootloader) will pass: flash:cmnlib

(bootloader) will pass: flash:keymaster

(bootloader) will pass: flash:sbl1

(bootloader) committing: bootloader.default.xml ...

(bootloader) - flashing 'emmc_appsboot.mbn' to 'aboot'

(bootloader) - flashing 'rpm.mbn' to 'rpm'

(bootloader) - flashing 'tz.mbn' to 'tz'

(bootloader) - flashing 'hyp.mbn' to 'hyp'

(bootloader) - flashing 'cmnlib.mbn' to 'cmnlib'

(bootloader) - flashing 'keymaster.mbn' to 'keymaster'

(bootloader) - flashing 'sbl1.mbn' to 'sbl1'

OKAY [ 0.459s]

finished. total time: 0.622s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash logo logo.bin

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:logo: not found

target reported max download size of 536870912 bytes

sending 'logo' (2186 KB)...

OKAY [ 0.101s]

writing 'logo'...

OKAY [ 0.064s]

finished. total time: 0.170s

C:\Program Files (x86)\Minimal ADB and Fastboot>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

target reported max download size of 536870912 bytes

sending 'boot' (16384 KB)...

OKAY [ 0.593s]

writing 'boot'...

(bootloader) Image boot failed validation

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 0.801s

C:\Program Files (x86)\Minimal ADB and Fastboot>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

target reported max download size of 536870912 bytes

sending 'recovery' (16484 KB)...

OKAY [ 0.590s]

writing 'recovery'...

(bootloader) Image recovery failed validation

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 0.802s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash dsp adspso.bin

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:dsp: not found

target reported max download size of 536870912 bytes

sending 'dsp' (16384 KB)...

OKAY [ 0.573s]

writing 'dsp'...

OKAY [ 0.267s]

finished. total time: 0.845s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash oem oem.img

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:oem: not found

target reported max download size of 536870912 bytes

sending 'oem' (96490 KB)...

OKAY [ 3.297s]

writing 'oem'...

(bootloader) Image o failed validation

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 3.425s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.0

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

target reported max download size of 536870912 bytes

sending 'system' (261013 KB)...

OKAY [ 8.868s]

writing 'system'...

(bootloader) Image s failed validation

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.995s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.1

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

target reported max download size of 536870912 bytes

sending 'system' (250842 KB)...

OKAY [ 8.556s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.622s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.2

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

target reported max download size of 536870912 bytes

sending 'system' (254493 KB)...

OKAY [ 8.667s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.714s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.3

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

target reported max download size of 536870912 bytes

sending 'system' (247302 KB)...

OKAY [ 8.439s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.518s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.4

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

target reported max download size of 536870912 bytes

sending 'system' (260402 KB)...

OKAY [ 8.872s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.918s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.5

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

target reported max download size of 536870912 bytes

sending 'system' (262057 KB)...

OKAY [ 8.904s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.956s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.6

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

target reported max download size of 536870912 bytes

sending 'system' (261941 KB)...

OKAY [ 8.897s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.977s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.7

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:system: not found

target reported max download size of 536870912 bytes

sending 'system' (82497 KB)...

OKAY [ 2.817s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 2.876s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash modem NON-HLOS.bin

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:modem: not found

target reported max download size of 536870912 bytes

sending 'modem' (76958 KB)...

OKAY [ 2.624s]

writing 'modem'...

OKAY [ 1.136s]

finished. total time: 3.764s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase modemst1

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:modemst1: not found

erasing 'modemst1'...

OKAY [ 0.040s]

finished. total time: 0.043s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase modemst2

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:modemst2: not found

erasing 'modemst2'...

OKAY [ 0.039s]

finished. total time: 0.041s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash fsg fsg.mbn

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:fsg: not found

target reported max download size of 536870912 bytes

sending 'fsg' (2032 KB)...

OKAY [ 0.096s]

writing 'fsg'...

OKAY [ 0.077s]

finished. total time: 0.179s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase cache

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:cache: not found

erasing 'cache'...

OKAY [ 0.042s]

finished. total time: 0.049s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase userdata

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:userdata: not found

erasing 'userdata'...

OKAY [ 0.120s]

finished. total time: 0.122s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase customize

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:customize: not found

erasing 'customize'...

OKAY [ 0.033s]

finished. total time: 0.035s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase clogo

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) has-slot:clogo: not found

erasing 'clogo'...

OKAY [ 0.031s]

finished. total time: 0.033s

C:\Program Files (x86)\Minimal ADB and Fastboot>