How do you use force adb to backup without user confirmation?

android backup adb fastboot
radj picture radj · Nov 11, 2013 · Viewed 11.8k times · Source

Running adb backup -apk -shared -all on an Android device yields Now unlock your device and confirm the backup operation. on the Terminal and a prompt on the device screen that requires user intervention. I was hoping to automate backup and restore from adb. is there a way to force and proceed with backup without user confirmation?

Answer

dess picture dess · Feb 17, 2020

My solution for this case is to use dd (it's available in vanilla Android, and custom recoveries, like TWRP, as well):

sudo adb shell dd if=/dev/block/bootdevice/by-name/boot > boot.bin
sudo adb shell dd if=/dev/block/bootdevice/by-name/modem > modem.bin
sudo adb shell dd if=/dev/block/bootdevice/by-name/system > system.bin

...Or with compression:

sudo adb shell dd if=/dev/block/bootdevice/by-name/system | xz -9 -T0 - > system.bin.xz

Later the binary image can be transformed to any desired backup format.

Related questions

backing up android device using adb

I am attempting to copy all the applications and data from a android tablet1 to another android tablet2. Both tablets has the same specification and is the same type. My approach is to use the command adb backup -f my_…

Read More
Adb backup does not work

I need help from you guys, because I don't know what I did wrong with adb backup. I want to backup my Samsung Galaxy S3 LTE (GT-I9305) without root. I googled it and found Full Android Backup with SDK Manager. …

Read More
using adb backup/restore?

I want to use the adb backup / restore . I use adb restore to restore a backup. But my problem after some delay, the mechanism restore stops. I want my restore do not stop. And if possible it starts automatically and …

Read More