[ZTE Axon 7 Questions & Answers] Jcth1:
Hi, I managed to have a play with the phone using the edl tool, the axon7 toolkit and even adb 15 second installer. No command i have tried on B29 MM will lock the bootloader.

The 5 second screen is still there on boot and shows unlocked. I went upto N B15 and the OEM is greyed out but still a 5 second screen. So reverted back to MM B29 for now and hope someone can help me.

Edit - I've tried flashing stock images with axon 7 edl tool and some success in flashing stock but it still leaves me with the 5second screen I've tried now to inject twrp in a stock image to then hopefully flash the remove 5 second screen g and u zip but I get stuck with an encrypted drive and needing to enter a password thus unable to put the zip on the phone to flash with twrp 3.2.3.0

Everything i do i just end up with Failed Command

be1a5d19 device

C:\adb>adb reboot bootloader

C:\adb>fastboot oem lock

...

FAILED (remote: unknown command)

finished. total time: 0.016s

C:\adb>fastboot devices

C:\adb>adb devices

List of devices attached

be1a5d19 device

C:\adb>adb reboot bootloader

C:\adb>fastboot flashing lock_critical

...

FAILED (remote: unknown command)

finished. total time: 0.016s

C:\adb>fastboot flash lock_critical

unknown partition 'lock_critical'

error: cannot determine image filename for 'lock_critical'

C:\adb>fastboot flashing lock critical

usage: fastboot [ <option> ] <command>

commands:

update <filename> reflash device from update.zip

flashall flash boot, system, vendor and if fou

nd,

recovery

flash <partition> [ <filename> ] write a file to a flash partition

flashing lock locks the device. Prevents flashing

partitions

flashing unlock unlocks the device. Allows user to

flash any partition except the ones

that are related to bootloader

flashing lock_critical Prevents flashing bootloader related

partitions

flashing unlock_critical Enables flashing bootloader related

partitions

flashing get_unlock_ability Queries bootloader to see if the

device is unlocked

erase <partition> erase a flash partition

format[:[<fs type>][:[<size>]] <partition> format a flash partition.

Can override the fs type and/or

size the bootloader reports.

getvar <variable> display a bootloader variable

boot <kernel> [ <ramdisk> ] download and boot kernel

flash:raw boot <kernel> [ <ramdisk> ] create bootimage and flash it

devices list all connected devices

continue continue with autoboot

reboot [bootloader] reboot device, optionally into bootlo

ader

reboot-bootloader reboot device into bootloader

help show this help message

options:

-w erase userdata and cache (and format

if supported by partition type)

-u do not first erase partition before

formatting

-s <specific device> specify device serial number

or path to device port

-l with "devices", lists device paths

-p <product> specify product name

-c <cmdline> override kernel commandline

-i <vendor id> specify a custom USB vendor id

-b <base_addr> specify a custom kernel base address.

default: 0x10000000

-n <page size> specify the nand page size.

default: 2048

-S <size>[K|M|G] automatically sparse files greater

than size. 0 to disable

C:\adb>adb reboot bootloader

C:\adb>adb oem lock

Android Debug Bridge version 1.0.32

Revision eac51f2bb6a8-android

-a - directs adb to listen on all interfaces for a c

onnection

-d - directs command to the only connected USB devic

e

returns an error if more than one USB device is

present.

-e - directs command to the only running emulator.

returns an error if more than one emulator is r

unning.

-s <specific device> - directs command to the device or emulator with

the given

serial number or qualifier. Overrides ANDROID_S

ERIAL

environment variable.

-p <product name or path> - simple product name like 'sooner', or

a relative/absolute path to a product

out directory like 'out/target/product/sooner'.

If -p is not specified, the ANDROID_PRODUCT_OUT

environment variable is used, which must

be an absolute path.

-H - Name of adb server host (default: localhost)

-P - Port of adb server (default: 5037)

devices [-l] - list all connected devices

('-l' will also list device qualifiers)

connect <host>[:<port>] - connect to a device via TCP/IP

Port 5555 is used by default if no port number

is specified.

disconnect [<host>[:<port>]] - disconnect from a TCP/IP device.

Port 5555 is used by default if no port number

is specified.

Using this command with no additional arguments

will disconnect from all connected TCP/IP devic

es.

device commands:

adb push [-p] <local> <remote>

- copy file/dir to device

('-p' to display the transfer progress)

adb pull [-p] [-a] <remote> [<local>]

- copy file/dir from device

('-p' to display the transfer progress)

('-a' means copy timestamp and mode)

adb sync [ <directory> ] - copy host->device only if changed

(-l means list but don't copy)

(see 'adb help all')

adb shell - run remote shell interactively

adb shell <command> - run remote shell command

adb emu <command> - run emulator console command

adb logcat [ <filter-spec> ] - View device log

adb forward --list - list all forward socket connections.

the format is a list of lines with the followin

g format:

<serial> " " <local> " " <remote> "\n"

adb forward <local> <remote> - forward socket connections

forward specs are one of:

tcp:<port>

localabstract:<unix domain socket name>

localreserved:<unix domain socket name>

localfilesystem:<unix domain socket name>

dev:<character device name>

jdwp:<process pid> (remote only)

adb forward --no-rebind <local> <remote>

- same as 'adb forward <local> <remote>' but fail

s

if <local> is already forwarded

adb forward --remove <local> - remove a specific forward socket connection

adb forward --remove-all - remove all forward socket connections

adb reverse --list - list all reverse socket connections from device

adb reverse <remote> <local> - reverse socket connections

reverse specs are one of:

tcp:<port>

localabstract:<unix domain socket name>

localreserved:<unix domain socket name>

localfilesystem:<unix domain socket name>

adb reverse --norebind <remote> <local>

- same as 'adb reverse <remote> <local>' but fail

s

if <remote> is already reversed.

adb reverse --remove <remote>

- remove a specific reversed socket connection

adb reverse --remove-all - remove all reversed socket connections from dev

ice

adb jdwp - list PIDs of processes hosting a JDWP transport

adb install [-lrtsdg] <file>

- push this package file to the device and instal

l it

(-l: forward lock application)

(-r: replace existing application)

(-t: allow test packages)

(-s: install application on sdcard)

(-d: allow version code downgrade)

(-g: grant all runtime permissions)

adb install-multiple [-lrtsdpg] <file...>

- push this package file to the device and instal

l it

(-l: forward lock application)

(-r: replace existing application)

(-t: allow test packages)

(-s: install application on sdcard)

(-d: allow version code downgrade)

(-p: partial application install)

(-g: grant all runtime permissions)

adb uninstall [-k] <package> - remove this app package from the device

('-k' means keep the data and cache directories

)

adb bugreport - return all information from the device

that should be included in a bug report.

adb backup [-f <file>] [-apk|-noapk] [-obb|-noobb] [-shared|-noshared] [-all]

[-system|-nosystem] [<packages...>]

- write an archive of the device's data to <file>

.

If no -f option is supplied then the data is wr

itten

to "backup.ab" in the current directory.

(-apk|-noapk enable/disable backup of the .apks

themselves

in the archive; the default is noapk.)

(-obb|-noobb enable/disable backup of any insta

lled apk expansion

(aka .obb) files associated with each applic

ation; the default

is noobb.)

(-shared|-noshared enable/disable backup of the

device's

shared storage / SD card contents; the defau

lt is noshared.)

(-all means to back up all installed applicatio

ns)

(-system|-nosystem toggles whether -all automat

ically includes

system applications; the default is to inclu

de system apps)

(<packages...> is the list of applications to b

e backed up. If

the -all or -shared flags are passed, then t

he package

list is optional. Applications explicitly g

iven on the

command line will be included even if -nosys

tem would

ordinarily cause them to be omitted.)

adb restore <file> - restore device contents from the <file> backup

archive

adb disable-verity - disable dm-verity checking on USERDEBUG builds

adb enable-verity - re-enable dm-verity checking on USERDEBUG build

s

adb keygen <file> - generate adb public/private key. The private ke

y is stored in <file>,

and the public key is stored in <file>.pub. Any

existing files

are overwritten.

adb help - show this help message

adb version - show version num

scripting:

adb wait-for-device - block until device is online

adb start-server - ensure that there is a server running

adb kill-server - kill the server if it is running

adb get-state - prints: offline | bootloader | device

adb get-serialno - prints: <serial-number>

adb get-devpath - prints: <device-path>

adb remount - remounts the /system, /vendor (if present) and

/oem (if present) partitions on the device read-write

adb reboot [bootloader|recovery]

- reboots the device, optionally into the bootloa

der or recovery program.

adb reboot sideload - reboots the device into the sideload mode in re

covery program (adb root required).

adb reboot sideload-auto-reboot

- reboots into the sideload mode, then reboots au

tomatically after the sideload regardless of the result.

adb reboot-bootloader - reboots the device into the bootloader

adb root - restarts the adbd daemon with root permissions

adb unroot - restarts the adbd daemon without root permissio

ns

adb usb - restarts the adbd daemon listening on USB

adb tcpip <port> - restarts the adbd daemon listening on TCP on th

e specified port

networking:

adb ppp <tty> [parameters] - Run PPP over USB.

Note: you should not automatically start a PPP connection.

<tty> refers to the tty for PPP stream. Eg. dev:/dev/omap_csmi_tty1

[parameters] - Eg. defaultroute debug dump local notty usepeerdns

adb sync notes: adb sync [ <directory> ]

<localdir> can be interpreted in several ways:

- If <directory> is not specified, /system, /vendor (if present), /oem (if pre

sent) and /data partitions will be updated.

- If it is "system", "vendor", "oem" or "data", only the corresponding partiti

on

is updated.

environmental variables:

ADB_TRACE - Print debug information. A comma separated list

of the following values

1 or all, adb, sockets, packets, rwx, usb, sync

, sysdeps, transport, jdwp

ANDROID_SERIAL - The serial number to connect to. -s takes prior

ity over this if given.

ANDROID_LOG_TAGS - When used with the logcat option, only these de

bug tags are printed.

C:\adb>

As you can see i tried several commands to lock.

cheers