[Droid Turbo 2 Q&A, Help & Troubleshooting] justmoto92:
[SOLUTION!]

I was able to

boot into fastboot mode

,

so I flashed the Motorola official firmware

(DON'T FLASH BOOTLOADER.IMG AND GPT if your device has the newer version of firmware installed.)

Thanks to [MENTION=8464942]gyarados025[/MENTION] [MENTION=8881281]kkrupaa[/MENTION]!

==================================================================================

After I dirty flashed the unofficial LineageOS 20180420 by [MENTION=5261119]jwchen119[/MENTION] from the previous 20180317, I received some errors (photos below) while installing and reboot...

And now my phone can't boot up anymore. :(

(NOTE: I am still able to boot into TWRP recovery!)

[IMG="Installation error"]https://i.imgur.com/i4laCNal.jpg[/IMG]

detected filesystem ext4 for /dev/block/bootdevice/by-name/system

mount: failed to mount /dev/block/bootdevice/by-name/system at /system: Device or resource busy

detected filesystem ext4 for /dev/block/bootdevice/by-name/modem

Extracting modem firmware

Firmware extracted

unmount of /system failed (-1): Device or resource busy

[IMG="Bootloader error"]https://i.imgur.com/vdEC4Tgl.jpg[/IMG]

Error: failed to load kernel!

Fastboot Reason: Fall-through from normal boot mode

And that's when I reboot, and I will be auto booted to the bootloader with startup error (I still can switch to recovery mode though, via volume button) . Anyone able to help please? :(

Model: XT1580 64GB

Bootloader: A8.63

TWRP Version: 3.2.1-0

(bootloader) slot-count: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixes: not found

(bootloader) version: 0.5

(bootloader) version-bootloader: moto-msm8994-A8.63

(bootloader) product: kinzie

(bootloader) board: kinzie

(bootloader) secure: yes

(bootloader) hwrev: 0x8301

(bootloader) radio: 0x2

(bootloader) emmc: 64GB Toshiba REV=07 PRV=00 TYPE=57 PNM=064G38

(bootloader) ram[0]: 3072MB Samsung S16 SDRAM DIE=6Gb M5=x1 M6=x3 M7=x0

(bootloader) ram[1]: M8=x4

(bootloader) cpu: MSM8994

(bootloader) serialno:

(bootloader) cid: 0x0007

(bootloader) channelid: 0x51

(bootloader) uid: ACB5FD011B000000000000000000

(bootloader) unlocked: yes

(bootloader) securestate: unlocked

(bootloader) iswarrantyvoid: yes

(bootloader) mot_sst: 3

(bootloader) max-download-size: 536870912

(bootloader) reason: Volume down key pressed

(bootloader) imei:

(bootloader) meid:

(bootloader) date: 09-01-2016

(bootloader) sku: XT1580

(bootloader) battid:

(bootloader) iccid:

(bootloader) cust_md5:

(bootloader) max-sparse-size: 268435456

(bootloader) current-time: "Sun Dec 3 3:27:18 UTC 2017"

(bootloader) ro.build.fingerprint[0]: motorola/kinzie_reteu/kinzie:7.0/N

(bootloader) ro.build.fingerprint[1]: PKS25.200-12-9/6:user/release-keys

(bootloader) ro.build.version.full[0]: Blur_Version.25.221.9.kinzie_rete

(bootloader) ro.build.version.full[1]: u.reteu.en.EU

(bootloader) ro.build.version.qcom: <not found>

(bootloader) version-baseband: <not found>

(bootloader) kernel.version[0]: Linux version 3.10.84-perf-ge1ecd45 (hud

(bootloader) kernel.version[1]: soncm@ilclbld35) (gcc version 4.9 201501

(bootloader) kernel.version[2]: 23 (prerelease) (GCC) ) #1 SMP PREEMPT F

(bootloader) kernel.version[3]: ri Oct 27 00:30:05 CDT 2017

(bootloader) sbl1.git: git=MBM-NG-VA8.63-0-g4e1b53f

(bootloader) rpm.git: git=fa49dab

(bootloader) tz.git: git=0265775-dirty

(bootloader) hyp.git: git=0265775-dirty

(bootloader) sdi.git: git=5acf8a8-dirty

(bootloader) pmic.git: git=MBM-NG-VA8.63-0-g4e1b53f

(bootloader) aboot.git: git=MBM-NG-VA8.63-0-g4be2eae

(bootloader) qe: qe 0/0

(bootloader) frp-state: no protection (0)

(bootloader) ro.carrier: retapac

all: listed above