ADB and Fastboot commands

Instructions for setting up Adb/Fastboot (windows)

1. On your phone, go to Settings > Developer Options and ensure USB debugging is ON. If Developer Options are not visible, go to Settings > About Phone and tap the Build Number 10 times. Then go back to Settings, and you will see Developer Options above About Phone. Click on Developer Options, then select USB debugging (also known as ADB debugging).
2. Install drivers on your PC. Try using PDANet for the drivers. Install the program by clicking “Run” and following the instructions. You can remove it later if needed.
3. Download the file at the bottom of these instructions to your desktop and extract the contents. You should see one folder and an install note (these instructions) after extraction. You can use a program called 7-ZIP to extract the files if needed (Google it, it’s free and a great tool).
4. Open your Start menu and click on My Computer. Then choose Local Disk C:. Drag the adb folder you extracted to the C: drive.
5. Open a command prompt and type cd\adb and hit enter. You should now see something like this: C:\adb>.
6. Type adb devices and hit enter in the command prompt. It should list your device.
7. You can also type adb reboot bootloader to put the device into bootloader mode. Now type fastboot devices and hit enter in the command prompt, and it should list your device. (You must be in the bootloader for fastboot to recognize your device.)

You should now be ready to send commands to your phone via ADB or Fastboot. You will need to repeat steps 5-6 anytime you want to use ADB/Fastboot. To send a file using ADB or Fastboot, make sure to place the file in your “adb” folder before issuing the command to send it to your device.

Logcat is the command to view the internal logs of the Android system. Viewing logs is often the best way to diagnose a problem, and is required for many issues. This way you’ll find out what apps are doing in the background without you noticing.

TAKING AN LOGCAT

ADB Commands Quote:

Fastboot Commands Quote: Example (fastboot flash recovery TWRP-recovery.img) then hit enter this will flash a recovery image to the device.

usage: fastboot [OPTION…] COMMAND…

flashing:
update ZIP Flash all partitions from an update.zip package.
flashall Flash all partitions from $ANDROID_PRODUCT_OUT.
On A/B devices, flashed slot is set as active.
Secondary images may be flashed to inactive slot.
flash PARTITION [FILENAME] Flash given partition, using the image from
$ANDROID_PRODUCT_OUT if no filename is given.

basics:
devices [-l] List devices in bootloader (-l: with device paths).
getvar NAME Display given bootloader variable.
reboot [bootloader] Reboot device.

locking/unlocking:
flashing lock|unlock Lock/unlock partitions for flashing
flashing lock_critical|unlock_critical
Lock/unlock ‘critical’ bootloader partitions.
flashing get_unlock_ability
Check whether unlocking is allowed (1) or not(0).

advanced:
erase PARTITION Erase a flash partition.
format[:FS_TYPE[:SIZE]] PARTITION
Format a flash partition.
set_active SLOT Set the active slot.
oem [COMMAND…] Execute OEM-specific command.
gsi wipe|disable Wipe or disable a GSI installation (fastbootd only).
wipe-super [SUPER_EMPTY] Wipe the super partition. This will reset it to
contain an empty set of default dynamic partitions.
create-logical-partition NAME SIZE
Create a logical partition with the given name and
size, in the super partition.
delete-logical-partition NAME
Delete a logical partition with the given name.
resize-logical-partition NAME SIZE
Change the size of the named logical partition.
snapshot-update cancel On devices that support snapshot-based updates, cancel
an in-progress update. This may make the device
unbootable until it is reflashed.
snapshot-update merge On devices that support snapshot-based updates, finish
an in-progress update if it is in the “merging”
phase.
fetch PARTITION OUT_FILE Fetch a partition image from the device.
boot image:
boot KERNEL [RAMDISK [SECOND]]
Download and boot kernel from RAM.
flash:raw PARTITION KERNEL [RAMDISK [SECOND]]
Create boot image and flash it.
–dtb DTB Specify path to DTB for boot image header version 2.
–cmdline CMDLINE Override kernel command line.
–base ADDRESS Set kernel base address (default: 0x10000000).
–kernel-offset Set kernel offset (default: 0x00008000).
–ramdisk-offset Set ramdisk offset (default: 0x01000000).
–tags-offset Set tags offset (default: 0x00000100).
–dtb-offset Set dtb offset (default: 0x01100000).
–page-size BYTES Set flash page size (default: 2048).
–header-version VERSION Set boot image header version.
–os-version MAJOR[.MINOR[.PATCH]]
Set boot image OS version (default: 0.0.0).
–os-patch-level YYYY-MM-DD
Set boot image OS security patch level.

Android Things:
stage IN_FILE Sends given file to stage for the next command.
get_staged OUT_FILE Writes data staged by the last command to a file.

options:
-w Wipe userdata.
-s SERIAL Specify a USB device.
-s tcp|udp:HOST[:PORT] Specify a network device.
-S SIZE[K|M|G] Break into sparse files no larger than SIZE.
–force Force a flash operation that may be unsafe.
–slot SLOT Use SLOT; ‘all’ for both slots, ‘other’ for
non-current slot (default: current active slot).
–set-active[=SLOT] Sets the active slot before rebooting.
–skip-secondary Don’t flash secondary slots in flashall/update.
–skip-reboot Don’t reboot device after flashing.
–disable-verity Sets disable-verity when flashing vbmeta.
–disable-verification Sets disable-verification when flashing vbmeta.
–fs-options=OPTION[,OPTION]
Enable filesystem features. OPTION supports casefold, projid, compress
–unbuffered Don’t buffer input or output.
–verbose, -v Verbose output.
–version Display version.
–help, -h Show this message.