[Moto G5 Plus Questions & Answers] Gothorian:
Still nothing. I adjunt the code in ADB/Fastboot:

Microsoft Windows [Versión 10.0.17763.503]
(c) 2018 Microsoft Corporation. Todos los derechos reservados.

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot devices
ZY2245XNKB fastboot

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot oem fb_mode_set
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
...
OKAY [ 0.172s]
finished. total time: 0.203s

C:\Users\orcri\Desktop\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' (45 KB)...
OKAY [ 0.016s]
writing 'partition'...
(bootloader) Validating 'gpt.default.xml'
(bootloader) Security version downgrade
(bootloader) Image primary_gpt failed validation
(bootloader) Preflash validation failed
(bootloader) Cancelling 'gpt.default.xml'
FAILED (remote failure)
finished. total time: 0.156s

C:\Users\orcri\Desktop\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' (5115 KB)...
OKAY [ 0.125s]
writing 'bootloader'...
(bootloader) Validating 'bootloader.default.xml'
(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 'devcfg.mbn' to 'devcfg'
(bootloader) - flashing 'cmnlib.mbn' to 'cmnlib'
(bootloader) - flashing 'cmnlib64.mbn' to 'cmnlib64'
(bootloader) - flashing 'keymaster.mbn' to 'keymaster'
(bootloader) - flashing 'prov.mbn' to 'prov'
(bootloader) - flashing 'sbl1.mbn' to 'sbl1'
OKAY [ 0.781s]
finished. total time: 0.922s

C:\Users\orcri\Desktop\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 [ 0.078s]
writing 'logo'...
OKAY [ 0.141s]
finished. total time: 0.234s

C:\Users\orcri\Desktop\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 [ 0.407s]
writing 'boot'...
(bootloader) Security version downgrade
(bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.672s

C:\Users\orcri\Desktop\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' (20580 KB)...
OKAY [ 0.516s]
writing 'recovery'...
(bootloader) Security version downgrade
(bootloader) Image recovery failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.812s

C:\Users\orcri\Desktop\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 [ 0.391s]
writing 'dsp'...
OKAY [ 0.297s]
finished. total time: 0.719s

C:\Users\orcri\Desktop\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' (104608 KB)...
OKAY [ 2.516s]
writing 'oem'...
(bootloader) Security version downgrade
(bootloader) Image o failed validation
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 2.687s

C:\Users\orcri\Desktop\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' (256557 KB)...
OKAY [ 6.141s]
writing 'system'...
(bootloader) Security version downgrade
(bootloader) Image s failed validation
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.312s

C:\Users\orcri\Desktop\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' (256617 KB)...
OKAY [ 6.098s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.176s

C:\Users\orcri\Desktop\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' (253985 KB)...
OKAY [ 6.092s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.186s

C:\Users\orcri\Desktop\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' (256710 KB)...
OKAY [ 6.178s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.240s

C:\Users\orcri\Desktop\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' (256912 KB)...
OKAY [ 6.093s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.125s

C:\Users\orcri\Desktop\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' (257861 KB)...
OKAY [ 6.069s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.147s

C:\Users\orcri\Desktop\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' (260027 KB)...
OKAY [ 6.191s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.269s

C:\Users\orcri\Desktop\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' (257785 KB)...
OKAY [ 6.129s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.223s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.8
(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' (257830 KB)...
OKAY [ 6.194s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.272s

C:\Users\orcri\Desktop\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' (71925 KB)...
OKAY [ 1.735s]
writing 'modem'...
OKAY [ 1.141s]
finished. total time: 2.891s

C:\Users\orcri\Desktop\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 [ 0.047s]
finished. total time: 0.047s

C:\Users\orcri\Desktop\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 [ 0.047s]
finished. total time: 0.062s

C:\Users\orcri\Desktop\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' (3012 KB)...
OKAY [ 0.094s]
writing 'fsg'...
OKAY [ 0.125s]
finished. total time: 0.235s

C:\Users\orcri\Desktop\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 [ 0.031s]
finished. total time: 0.047s

C:\Users\orcri\Desktop\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 [ 0.187s]
finished. total time: 0.203s

C:\Users\orcri\Desktop\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'...
(bootloader) Permission denied
FAILED (remote failure)
finished. total time: 0.062s

C:\Users\orcri\Desktop\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'...
(bootloader) Permission denied
FAILED (remote failure)
finished. total time: 0.047s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot oem fb_mode_clear
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
...
OKAY [ 0.172s]
finished. total time: 0.188s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot reboot
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
rebooting...

finished. total time: 0.266s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot oem fb_mode_set
...
OKAY [ 0.016s]
finished. total time: 0.016s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash partition gpt.bin
target reported max download size of 534773760 bytes
sending 'partition' (45 KB)...
OKAY [ 0.031s]
writing 'partition'...
(bootloader) Validating 'gpt.default.xml'
(bootloader) Security version downgrade
(bootloader) Image primary_gpt failed validation
(bootloader) Preflash validation failed
(bootloader) Cancelling 'gpt.default.xml'
FAILED (remote failure)
finished. total time: 0.172s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash bootloader bootloader.img
target reported max download size of 534773760 bytes
sending 'bootloader' (5115 KB)...
OKAY [ 0.141s]
writing 'bootloader'...
(bootloader) Validating 'bootloader.default.xml'
(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 'devcfg.mbn' to 'devcfg'
(bootloader) - flashing 'cmnlib.mbn' to 'cmnlib'
(bootloader) - flashing 'cmnlib64.mbn' to 'cmnlib64'
(bootloader) - flashing 'keymaster.mbn' to 'keymaster'
(bootloader) - flashing 'prov.mbn' to 'prov'
(bootloader) - flashing 'sbl1.mbn' to 'sbl1'
OKAY [ 0.578s]
finished. total time: 0.766s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash logo logo.bin
target reported max download size of 534773760 bytes
sending 'logo' (2186 KB)...
OKAY [ 0.078s]
writing 'logo'...
OKAY [ 0.125s]
finished. total time: 0.234s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash boot boot.img
target reported max download size of 534773760 bytes
sending 'boot' (16384 KB)...
OKAY [ 0.438s]
writing 'boot'...
(bootloader) Security version downgrade
(bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.703s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash recovery recovery.img
target reported max download size of 534773760 bytes
sending 'recovery' (20580 KB)...
OKAY [ 0.532s]
writing 'recovery'...
(bootloader) Security version downgrade
(bootloader) Image recovery failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.828s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash dsp adspso.bin
target reported max download size of 534773760 bytes
sending 'dsp' (16384 KB)...
OKAY [ 0.391s]
writing 'dsp'...
OKAY [ 0.301s]
finished. total time: 0.722s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash oem oem.img
target reported max download size of 534773760 bytes
sending 'oem' (104608 KB)...
OKAY [ 2.506s]
writing 'oem'...
(bootloader) Security version downgrade
(bootloader) Image o failed validation
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 2.646s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.0
target reported max download size of 534773760 bytes
sending 'system' (256557 KB)...
OKAY [ 6.149s]
writing 'system'...
(bootloader) Security version downgrade
(bootloader) Image s failed validation
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.274s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.1
target reported max download size of 534773760 bytes
sending 'system' (256617 KB)...
OKAY [ 6.109s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.140s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.2
target reported max download size of 534773760 bytes
sending 'system' (253985 KB)...
OKAY [ 6.156s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.218s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.3
target reported max download size of 534773760 bytes
sending 'system' (256710 KB)...
OKAY [ 6.172s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.234s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.4
target reported max download size of 534773760 bytes
sending 'system' (256912 KB)...
OKAY [ 6.017s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.048s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.5
target reported max download size of 534773760 bytes
sending 'system' (257861 KB)...
OKAY [ 6.265s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.312s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.6
target reported max download size of 534773760 bytes
sending 'system' (260027 KB)...
OKAY [ 6.356s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.396s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.7
target reported max download size of 534773760 bytes
sending 'system' (257785 KB)...
OKAY [ 6.057s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.182s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash system system.img_sparsechunk.8
target reported max download size of 534773760 bytes
sending 'system' (257830 KB)...
OKAY [ 6.156s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 6.203s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash modem NON-HLOS.bin
target reported max download size of 534773760 bytes
sending 'modem' (71925 KB)...
OKAY [ 1.766s]
writing 'modem'...
OKAY [ 1.109s]
finished. total time: 2.875s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot erase modemst1
erasing 'modemst1'...
OKAY [ 0.047s]
finished. total time: 0.062s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot erase modemst2
erasing 'modemst2'...
OKAY [ 0.047s]
finished. total time: 0.047s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot flash fsg fsg.mbn
target reported max download size of 534773760 bytes
sending 'fsg' (3012 KB)...
OKAY [ 0.078s]
writing 'fsg'...
OKAY [ 0.125s]
finished. total time: 0.219s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot erase cache
erasing 'cache'...
OKAY [ 0.031s]
finished. total time: 0.031s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot erase userdata
erasing 'userdata'...
OKAY [ 0.187s]
finished. total time: 0.187s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot erase customize
erasing 'customize'...
(bootloader) Permission denied
FAILED (remote failure)
finished. total time: 0.031s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot erase clogo
erasing 'clogo'...
(bootloader) Permission denied
FAILED (remote failure)
finished. total time: 0.047s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot oem fb_mode_clear
...
OKAY [ 0.016s]
finished. total time: 0.047s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot reboot
rebooting...

finished. total time: 0.031s

C:\Users\orcri\Desktop\Minimal ADB and Fastboot>fastboot oem fb_mode_set

And in Fastboot i got this:Invalid PIV system image. Why the phone cant flash any rom? it worries me.

In Bootloader Logs i got this:

Set Up Failed. Your device didn't start up successfully try to conect...

ERROR: Failed to pass validation, backup to fastboot

Fastboot reason: Fall-Through from normal boot mode

And yes, im trying flash the rom u gaveme.