[Moto Z2 Force  Questions & Answers] enigma9o7:
Thanks much. I was a little worried as there seems to be an error message about file system, a scary looking warning, and FAILURE message near the end, but seems to have worked, and was able to OTA update after flashall. The only thing the instructions didn't specifically mention was to start phone with volume down+-power for fastboot, once I figured that out all was well.

Microsoft Windows [Version 10.0.16299.371]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\>mkdir \Z2-Util

C:\>cd \Z2-Util

C:\Z2-Util>dir
Volume in drive C has no label.
Volume Serial Number is B45D-BE40

Directory of C:\Z2-Util

05/06/2018 03:45 PM <DIR> .
05/06/2018 03:45 PM <DIR> ..
12/30/2017 04:19 PM 1,784,320 adb.exe
12/30/2017 04:19 PM 97,792 AdbWinApi.dll
12/30/2017 04:19 PM 62,976 AdbWinUsbApi.dll
01/30/2018 02:22 PM 16,777,216 adspso.bin
01/30/2018 02:22 PM 23,905,510 boot.img
01/30/2018 02:22 PM 10,121,472 bootloader.img
01/30/2018 02:22 PM 4,604,160 BTFM.bin
12/30/2017 04:19 PM 853,504 fastboot.exe
04/23/2018 09:17 PM 1,433 flashall.bat
01/30/2018 04:24 PM 3,009 flashfile.xml
01/30/2018 02:22 PM 5,730,304 fsg.mbn
01/30/2018 02:22 PM 211,712 gpt.bin
01/30/2018 02:22 PM 3,227,518 logo.bin
01/30/2018 04:24 PM 911 NASH_TMO_C_OCX27.109-51_subsidy-TMO_regulatory-DEFAULT_CFC.info.txt
01/30/2018 02:22 PM 99,753,156 NON-HLOS.bin
01/30/2018 02:17 PM 179,898,736 oem.img
01/30/2018 04:23 PM 0 regulatory_info_default.png
01/30/2018 04:24 PM 2,701 servicefile.xml
01/30/2018 04:22 PM 610 slcf_rev_d_tmo_rsu_v1.1.nvm
01/30/2018 04:23 PM 528,589,836 system.img_sparsechunk.0
01/30/2018 04:23 PM 507,000,512 system.img_sparsechunk.1
01/30/2018 04:23 PM 531,596,644 system.img_sparsechunk.2
01/30/2018 04:23 PM 536,338,408 system.img_sparsechunk.3
01/30/2018 04:23 PM 528,569,592 system.img_sparsechunk.4
01/30/2018 04:23 PM 430,677,116 system.img_sparsechunk.5
01/30/2018 04:24 PM 527,547,620 system_b.img_sparsechunk.0
01/30/2018 04:24 PM 314,597,544 system_b.img_sparsechunk.1
27 File(s) 4,251,954,312 bytes
2 Dir(s) 250,683,760,640 bytes free

C:\Z2-Util>flashall

C:\Z2-Util>fastboot oem fb_mode_set
< waiting for any device >
...
OKAY [ 0.016s]
finished. total time: 0.016s

C:\Z2-Util>fastboot getvar max-sparse-size
max-sparse-size: 268435456
finished. total time: 0.003s

C:\Z2-Util>fastboot flash partition gpt.bin
target reported max download size of 536870912 bytes
sending 'partition' (206 KB)...
OKAY [ 0.012s]
writing 'partition'...
(bootloader) Validating 'gpt.default.xml'
(bootloader) Committing 'gpt.default.xml'
(bootloader) - flashing 'gpt_main0.bin' to 'partition:0'
(bootloader) - flashing 'gpt_main1.bin' to 'partition:1'
(bootloader) - flashing 'gpt_main2.bin' to 'partition:2'
(bootloader) - flashing 'gpt_main3.bin' to 'partition:3'
(bootloader) - flashing 'gpt_main4.bin' to 'partition:4'
(bootloader) - flashing 'gpt_main5.bin' to 'partition:5'
OKAY [ 0.250s]
finished. total time: 0.267s

C:\Z2-Util>fastboot flash bootloader_a bootloader.img
target reported max download size of 536870912 bytes
sending 'bootloader_a' (9884 KB)...
OKAY [ 0.454s]
writing 'bootloader_a'...
(bootloader) Validating 'bootloader.default.xml'
(bootloader) Committing 'bootloader.default.xml'
(bootloader) - flashing 'xbl.elf' to 'xbl'
(bootloader) - flashing 'cmnlib.mbn' to 'cmnlib'
(bootloader) - flashing 'cmnlib64.mbn' to 'cmnlib64'
(bootloader) - flashing 'abl.elf' to 'abl'
(bootloader) - flashing 'keymaster.mbn' to 'keymaster'
(bootloader) - flashing 'rpm.mbn' to 'rpm'
(bootloader) - flashing 'pmic.elf' to 'pmic'
(bootloader) - flashing 'hyp.mbn' to 'hyp'
(bootloader) - flashing 'tz.mbn' to 'tz'
(bootloader) - flashing 'devcfg.mbn' to 'devcfg'
(bootloader) - flashing 'storsec.mbn' to 'storsec'
(bootloader) - flashing 'prov64.mbn' to 'prov'
OKAY [ 0.202s]
finished. total time: 0.661s

C:\Z2-Util>fastboot flash bootloader_b bootloader.img
target reported max download size of 536870912 bytes
sending 'bootloader_b' (9884 KB)...
OKAY [ 0.365s]
writing 'bootloader_b'...
(bootloader) Validating 'bootloader.default.xml'
(bootloader) Committing 'bootloader.default.xml'
(bootloader) - flashing 'xbl.elf' to 'xbl'
(bootloader) - flashing 'cmnlib.mbn' to 'cmnlib'
(bootloader) - flashing 'cmnlib64.mbn' to 'cmnlib64'
(bootloader) - flashing 'abl.elf' to 'abl'
(bootloader) - flashing 'keymaster.mbn' to 'keymaster'
(bootloader) - flashing 'rpm.mbn' to 'rpm'
(bootloader) - flashing 'pmic.elf' to 'pmic'
(bootloader) - flashing 'hyp.mbn' to 'hyp'
(bootloader) - flashing 'tz.mbn' to 'tz'
(bootloader) - flashing 'devcfg.mbn' to 'devcfg'
(bootloader) - flashing 'storsec.mbn' to 'storsec'
(bootloader) - flashing 'prov64.mbn' to 'prov'
OKAY [ 0.243s]
finished. total time: 0.627s

C:\Z2-Util>fastboot flash modem_a NON-HLOS.bin
target reported max download size of 536870912 bytes
sending 'modem_a' (97415 KB)...
OKAY [ 4.009s]
writing 'modem_a'...
OKAY [ 1.047s]
finished. total time: 5.055s

C:\Z2-Util>fastboot flash fsg_a fsg.mbn
target reported max download size of 536870912 bytes
sending 'fsg_a' (5596 KB)...
OKAY [ 0.266s]
writing 'fsg_a'...
OKAY [ 0.078s]
finished. total time: 0.344s

C:\Z2-Util>fastboot flash modem_b NON-HLOS.bin
target reported max download size of 536870912 bytes
sending 'modem_b' (97415 KB)...
OKAY [ 3.016s]
writing 'modem_b'...
OKAY [ 1.031s]
finished. total time: 4.063s

C:\Z2-Util>fastboot flash fsg_b fsg.mbn
target reported max download size of 536870912 bytes
sending 'fsg_b' (5596 KB)...
OKAY [ 0.172s]
writing 'fsg_b'...
OKAY [ 0.078s]
finished. total time: 0.250s

C:\Z2-Util>fastboot erase modemst1
erasing 'modemst1'...
OKAY [ 0.016s]
finished. total time: 0.016s

C:\Z2-Util>fastboot erase modemst2
erasing 'modemst2'...
OKAY [ 0.000s]
finished. total time: 0.016s

C:\Z2-Util>fastboot flash bluetooth_a BTFM.bin
target reported max download size of 536870912 bytes
sending 'bluetooth_a' (4496 KB)...
OKAY [ 0.172s]
writing 'bluetooth_a'...
OKAY [ 0.047s]
finished. total time: 0.234s

C:\Z2-Util>fastboot flash dsp_a adspso.bin
target reported max download size of 536870912 bytes
sending 'dsp_a' (16384 KB)...
OKAY [ 0.625s]
writing 'dsp_a'...
OKAY [ 0.156s]
finished. total time: 0.781s

C:\Z2-Util>fastboot flash logo_a logo.bin
target reported max download size of 536870912 bytes
sending 'logo_a' (3151 KB)...
OKAY [ 0.141s]
writing 'logo_a'...
OKAY [ 0.047s]
finished. total time: 0.187s

C:\Z2-Util>fastboot flash boot_a boot.img
target reported max download size of 536870912 bytes
sending 'boot_a' (23345 KB)...
OKAY [ 0.937s]
writing 'boot_a'...
OKAY [ 0.391s]
finished. total time: 1.344s

C:\Z2-Util>fastboot flash system_a system.img_sparsechunk.0
target reported max download size of 536870912 bytes
sending 'system_a' (516201 KB)...
OKAY [ 20.836s]
writing 'system_a'...
OKAY [ 5.582s]
finished. total time: 26.434s

C:\Z2-Util>fastboot flash system_a system.img_sparsechunk.1
target reported max download size of 536870912 bytes
sending 'system_a' (495117 KB)...
OKAY [ 20.062s]
writing 'system_a'...
OKAY [ 4.869s]
finished. total time: 24.930s

C:\Z2-Util>fastboot flash system_a system.img_sparsechunk.2
target reported max download size of 536870912 bytes
sending 'system_a' (519137 KB)...
OKAY [ 20.861s]
writing 'system_a'...
OKAY [ 5.812s]
finished. total time: 26.689s

C:\Z2-Util>fastboot flash system_a system.img_sparsechunk.3
target reported max download size of 536870912 bytes
sending 'system_a' (523767 KB)...
OKAY [ 22.962s]
writing 'system_a'...
OKAY [ 4.966s]
finished. total time: 27.928s

C:\Z2-Util>fastboot flash system_a system.img_sparsechunk.4
target reported max download size of 536870912 bytes
sending 'system_a' (516181 KB)...
OKAY [ 25.824s]
writing 'system_a'...
OKAY [ 5.688s]
finished. total time: 31.512s

C:\Z2-Util>fastboot flash system_a system.img_sparsechunk.5
target reported max download size of 536870912 bytes
sending 'system_a' (420583 KB)...
OKAY [ 18.590s]
writing 'system_a'...
OKAY [ 3.969s]
finished. total time: 22.559s

C:\Z2-Util>fastboot flash oem_a oem.img
target reported max download size of 536870912 bytes
sending 'oem_a' (175682 KB)...
OKAY [ 7.904s]
writing 'oem_a'...
OKAY [ 1.781s]
finished. total time: 9.686s

C:\Z2-Util>fastboot flash bluetooth_b BTFM.bin
target reported max download size of 536870912 bytes
sending 'bluetooth_b' (4496 KB)...
OKAY [ 0.172s]
writing 'bluetooth_b'...
OKAY [ 0.078s]
finished. total time: 0.250s

C:\Z2-Util>fastboot flash dsp_b adspso.bin
target reported max download size of 536870912 bytes
sending 'dsp_b' (16384 KB)...
OKAY [ 0.750s]
writing 'dsp_b'...
OKAY [ 0.156s]
finished. total time: 0.922s

C:\Z2-Util>fastboot flash logo_b logo.bin
target reported max download size of 536870912 bytes
sending 'logo_b' (3151 KB)...
OKAY [ 0.172s]
writing 'logo_b'...
OKAY [ 0.047s]
finished. total time: 0.219s

C:\Z2-Util>fastboot flash boot_b boot.img
target reported max download size of 536870912 bytes
sending 'boot_b' (23345 KB)...
OKAY [ 0.812s]
writing 'boot_b'...
OKAY [ 0.391s]
finished. total time: 1.203s

C:\Z2-Util>fastboot flash system_b system.img_sparsechunk.0
target reported max download size of 536870912 bytes
sending 'system_b' (516201 KB)...
OKAY [ 22.460s]
writing 'system_b'...
OKAY [ 5.437s]
finished. total time: 27.898s

C:\Z2-Util>fastboot flash system_b system.img_sparsechunk.1
target reported max download size of 536870912 bytes
sending 'system_b' (495117 KB)...
OKAY [ 20.393s]
writing 'system_b'...
OKAY [ 4.872s]
finished. total time: 25.281s

C:\Z2-Util>fastboot flash system_b system.img_sparsechunk.2
target reported max download size of 536870912 bytes
sending 'system_b' (519137 KB)...
OKAY [ 21.401s]
writing 'system_b'...
OKAY [ 5.859s]
finished. total time: 27.260s

C:\Z2-Util>fastboot flash system_b system.img_sparsechunk.3
target reported max download size of 536870912 bytes
sending 'system_b' (523767 KB)...
OKAY [ 22.156s]
writing 'system_b'...
OKAY [ 4.984s]
finished. total time: 27.141s

C:\Z2-Util>fastboot flash system_b system.img_sparsechunk.4
target reported max download size of 536870912 bytes
sending 'system_b' (516181 KB)...
OKAY [ 21.069s]
writing 'system_b'...
OKAY [ 5.667s]
finished. total time: 26.767s

C:\Z2-Util>fastboot flash system_b system.img_sparsechunk.5
target reported max download size of 536870912 bytes
sending 'system_b' (420583 KB)...
OKAY [ 17.404s]
writing 'system_b'...
OKAY [ 3.994s]
finished. total time: 21.398s

C:\Z2-Util>fastboot flash oem_b oem.img
target reported max download size of 536870912 bytes
sending 'oem_b' (175682 KB)...
OKAY [ 6.563s]
writing 'oem_b'...
OKAY [ 1.766s]
finished. total time: 8.328s

C:\Z2-Util>fastboot erase carrier
erasing 'carrier'...
OKAY [ 0.016s]
finished. total time: 0.016s

C:\Z2-Util>fastboot erase ddr
erasing 'ddr'...
OKAY [ 0.000s]
finished. total time: 0.016s

C:\Z2-Util>fastboot oem fb_mode_clear
...
OKAY [ 0.000s]
finished. total time: 0.000s

C:\Z2-Util>fastboot -w
wiping userdata...
Erase successful, but not automatically formatting.
File system type raw not supported.
erasing 'userdata'...
OKAY [ 1.203s]
finished. total time: 1.203s

C:\Z2-Util>fastboot --set-active=other
Setting current slot to 'b'...
(bootloader) WARNING: Bootloader images on target slot b are not valid!!
(bootloader) There is risk of bricking HW. Please flash valid bootloader
(bootloader) into slot b before activating it. OR you could force to
(bootloader) switch to slot b by running the same command again
(bootloader) within 30 s if you understand what you're doing
FAILED (remote failure)
finished. total time: 0.141s

C:\Z2-Util>fastboot reboot-bootloader
rebooting into bootloader...
OKAY [ 0.016s]
finished. total time: 0.016s

C:\Z2-Util>