[Moto X4 Questions & Answers] VicenteCL:
Hi, i own a moto x4 since early 2018 and had no problems with unlocking the bootloader, then installing twrp and then root with magisk...

The problem is I was getting bored about a notification that says that there was a new update for my phone and it always failed when i try to download and install it, so i tried to fix it. I really don't know developing but i thought the problem was related to the "your device can't be checked for corruption" notification that i got everytime y booted my phone. So I thought "Man, i just have to lock the bootloader again" and maybe I'll successful install that update.

Well, things don't go well when I typed the command "fastboot oem lock" on cmd, I saved a security copy of my things before typing the command for the second time. Then i tried rebooting the phone and get that ugly red notification...

It says "Your device is corrupt. It can't be trusted and will not boot". Okay I tried the exact same method I did when unlocked the bootloader for the first time but don't work. So I don't know how to proceed.

Anybody can help me? Thanks for reading

PS C:\Users\-bich\Desktop\platform-tools_r28.0.0-windows\platform-tools> .\fastboot oem unlock YMCVIWY57PMTFM7EKO56
(bootloader) Check 'OEM unlocking' in Android Settings > Developer
(bootloader) Options

.\fastboot getvar all
(bootloader) kernel: uefi
(bootloader) version-bootloader: MBM-3.0-uefi-641a15b-180530
(bootloader) product: payton
(bootloader) board: payton
(bootloader) secure: yes
(bootloader) hwrev: P4
(bootloader) radio: LATAM
(bootloader) storage-type: eMMC
(bootloader) emmc: 32GB SAMSUNG DD68MB RV=08 PV=02 FV=0000000000000002
(bootloader) ufs: N/A
(bootloader) ram: 3GB SAMSUNG LP4x DIE=12Gb M5=01 M6=06 M7=00 M8=0E
(bootloader) cpu: SDM630 1.0 (6)
(bootloader) serialno: ZY224WWDP8
(bootloader) cid: 0x0032
(bootloader) channelid: 0x28
(bootloader) uid: C1F34D0A
(bootloader) securestate: flashing_locked
(bootloader) verity-state: logging (0)
(bootloader) iswarrantyvoid: yes
(bootloader) max-download-size: 536870912
(bootloader) reason: Volume down key pressed
(bootloader) imei: 356486081345556
(bootloader) meid:
(bootloader) date: 03-23-2018
(bootloader) sku: XT1900-4
(bootloader) carrier_sku:
(bootloader) battid: SNN5995A
(bootloader) battery-voltage: 4274
(bootloader) iccid:
(bootloader) cust_md5:
(bootloader) max-sparse-size: 268435456
(bootloader) ro.build.fingerprint[0]: motorola/payton/payton:8.0.0/OPWS2
(bootloader) ro.build.fingerprint[1]: 7.57-40-17/23:user/release-keys
(bootloader) poweroffalarm: 0
(bootloader) ro.build.version.full[0]: Blur_Version.27.271.23.payton.ret
(bootloader) ro.build.version.full[1]: ail.en.US
(bootloader) ro.build.version.qcom: <not found>
(bootloader) version-baseband: M660_7036.16.01.69R PAYTON_LATAM_CUST
(bootloader) kernel.version[0]: Linux version 4.4.78-perf-g8a19f40 (huds
(bootloader) kernel.version[1]: oncm@ilclbld69) (gcc version 4.9.x 20150
(bootloader) kernel.version[2]: 123 (prerelease) (GCC) ) #1 SMP PREEMPT
(bootloader) kernel.version[3]: Wed May 30 14:43:30 CDT 2018
(bootloader) git:abl: MBM-3.0-uefi-641a15b-180530
(bootloader) git:xbl: MBM-3.0-uefi-dfccc3a-180530
(bootloader) git:pmic: MBM-3.0-uefi-dfccc3a-180530
(bootloader) git:rpm: MBM-3.0-uefi-245b046-180530
(bootloader) git:tz: MBM-3.0-uefi-eee7f2d-dirty-180530
(bootloader) git:hyp: MBM-3.0-uefi-eee7f2d-dirty-180530
(bootloader) git:devcfg: MBM-3.0-uefi-eee7f2d-dirty-180530
(bootloader) git:cmnlib: MBM-3.0-uefi-eee7f2d-dirty-180530
(bootloader) git:cmnlib64: MBM-3.0-uefi-eee7f2d-dirty-180530
(bootloader) git:keymaster: MBM-3.0-uefi-eee7f2d-dirty-180530
(bootloader) git:prov: MBM-3.0-uefi-eee7f2d-dirty-180530
(bootloader) git:storsec: MBM-3.0-uefi-eee7f2d-dirty-180530
(bootloader) qe: "qe 1/1"
(bootloader) frp-state: protected (77)
(bootloader) ro.carrier: opencl
(bootloader) current-slot: _b
(bootloader) running-bl-slot: _b/_b
(bootloader) running-boot-lun: 0
(bootloader) slot-suffixes: _a,_b
(bootloader) slot-count: 2
(bootloader) slot-successful:_a: yes
(bootloader) slot-successful:_b: yes
(bootloader) slot-unbootable:_a: yes
(bootloader) slot-unbootable:_b: no
(bootloader) slot-retry-count:_a: 6
(bootloader) slot-retry-count:_b: 6
all: listed above