[Moto E6 Guides, News, & Discussion] droidparanoid:
I'm having the same issue, fastboot is working and debugging is on. I am trying to follow the instructions in the motorom.zip using the img files contained within.

adb reboot bootloader

K:\Tools\Moto e6\MotoROM>K:\Tools\platform-tools\fastboot.exe -w flash boot boot.img

(bootloader) is-logical:boot: not found

Sending 'boot' (32768 KB) OKAY [ 1.056s]

Writing 'boot' (bootloader) Image boot failed validation

(bootloader) Preflash validation failed

FAILED (remote: '')

fastboot: error: Command failed

K:\Tools\Moto e6\MotoROM>K:\Tools\platform-tools\fastboot.exe devices

ZF6523HSBS fastboot

Figured this might help:

K:\Tools\Moto e6\MotoROM>K:\Tools\platform-tools\fastboot.exe getvar all

(bootloader) version: 0.5

(bootloader) version-bootloader: MBM-2.1-surfna_vzw-6aba00ea6d1-210209

(bootloader) product: surfna

(bootloader) board: surfna

(bootloader) secure: yes

(bootloader) hwrev: PVT

(bootloader) radio: 5

(bootloader) storage-type: emmc

(bootloader) emmc: 16GB SKHYNIX HAG4a2 RV=08 PV=A5 FV=00000000000000A5

(bootloader) ram: 2GB SKHYNIX LP3 DIE=8Gb M5=06 M6=03 M7=01 M8=1F

(bootloader) cpu: MSM8940

(bootloader) serialno: ZF6523HSBS

(bootloader) cid: 0x0002

(bootloader) channelid: 0x98

(bootloader) uid: 551B55F400000000000000000000

(bootloader) securestate: oem_locked

(bootloader) factory-modes: disabled

(bootloader) iswarrantyvoid: no

(bootloader) max-download-size: 535822336

(bootloader) reason: Reboot mode set to fastboot

(bootloader) imei: 352176102805498

(bootloader) meid:

(bootloader) date: 07-16-2020

(bootloader) sku: XT2005-1PP

(bootloader) carrier_sku: XT2005-1PP

(bootloader) battid:

(bootloader) iccid: 89148000005710774951

(bootloader) cust_md5:

(bootloader) max-sparse-size: 268435456

(bootloader) current-time: "Fri Feb 12 2:57:18 UTC 2021"

(bootloader) ro.build.fingerprint[0]: motorola/surfna_vzw/surfna:9/PCBS2

(bootloader) ro.build.fingerprint[1]: 9.73-81-18-7/a2beff:user/release-k

(bootloader) ro.build.fingerprint[2]: eys

(bootloader) poweroffalarm: 0

(bootloader) ro.build.version.full[0]: Blur_Version.29.201.8.surfna_vzw.

(bootloader) ro.build.version.full[1]: verizon.en.US

(bootloader) ro.build.version.qcom: LA.UM.7.6.2.r1-08100-89xx.0

(bootloader) version-baseband: M8940_43.192.01.165R SURF_NA_CUST

(bootloader) kernel.version[0]: Linux version 4.9.112-perf+ (hudsoncm@il

(bootloader) kernel.version[1]: clbld176) (gcc version 4.9.x 20150123 (p

(bootloader) kernel.version[2]: rerelease) (GCC) ) #1 SMP PREEMPT Tue Fe

(bootloader) kernel.version[3]: b 9 22:54:24 CST 2021

(bootloader) sbl1.git: MBM-2.1-surfna_vzw-461a42d348-210209

(bootloader) rpm.git: MBM-2.1-surfna_vzw-d84d6494-dirty-210209

(bootloader) tz.git: MBM-2.1-surfna_vzw-4a1620691c-210209

(bootloader) devcfg.git: MBM-2.1-surfna_vzw-4a1620691c-210209

(bootloader) keymaster.git: MBM-2.1-surfna_vzw-4a1620691c-210209

(bootloader) cmnlib.git: MBM-2.1-surfna_vzw-4a1620691c-210209

(bootloader) cmnlib64.git: MBM-2.1-surfna_vzw-4a1620691c-210209

(bootloader) prov.git: MBM-2.1-surfna_vzw-4a1620691c-210209

(bootloader) aboot.git: MBM-2.1-surfna_vzw-6aba00ea6d1-210209

(bootloader) frp-state: no protection (210)

(bootloader) ro.carrier: vzwpre

(bootloader) current-slot:

(bootloader) running-boot-lun: 0

(bootloader) running-slot:

(bootloader) slot-suffixes: _a

(bootloader) slot-count: 1

(bootloader) slot-successful:_a: INVALID

(bootloader) slot-successful:_b: INVALID

(bootloader) slot-bootable:_a: INVALID

(bootloader) slot-bootable:_b: INVALID

(bootloader) slot-retry-count:_a: unknown

(bootloader) slot-retry-count:_b: unknown

(bootloader) pcb-part-no: SB28C58466

all: listed above

Finished. Total time: 0.076s