How to roll back Android to the previous one. Recovering data on Android after a factory reset

In the first case, there is nothing much to worry about, since, most likely, the cause of the trouble was a conflict in some applications or widgets, and everything can be corrected by returning to the factory settings. If the smartphone still works, albeit with various “artifacts,” you can also fix this yourself. In the third case, get by “ little blood“It’s unlikely to succeed and you’ll either have to restore your smartphone via a computer using a special software, or contact service center or to a familiar computer guru who knows how to restore Android after unsuccessful firmware.

How to restore factory firmware on Android

First of all, you need to find it. This will not be difficult to do, since popular manufacturers mobile gadgets posted on their official websites current versions firmware for all models of smartphones and tablets. The necessary software and detailed guide how to return factory firmware Android. If there is none, you can easily find it on the Internet by indicating the exact name and model of the device.

Rolling back a “raw” new firmware version to a stable one is the easiest way to fix a smartphone after an unsuccessful upgrade. If, of course, the user has a backup copy made in advance. It should be noted that even Google lately strongly recommends doing system backup before each update and this offer should not be neglected. Moreover, all the necessary functionality is included in the firmware, and if desired, you can use special programs from Google Play. This will not take much time, but it will protect the user from the loss of valuable data and other problems that may arise if the update is unsuccessful.

Popular utilities for creating backups and restoring Android systems

Titanium Backup

One of the oldest and most popular programs for data backup and recovery. It has very broad functionality, which is both its advantage and disadvantage. The latter is that if you accidentally activate the wrong process, you may not get the desired result or cause even more harm. Therefore, before you restore the firmware on Android using it, you need to find suitable instructions and strictly follow it.

Important note: the program only runs as superuser ().

Easy Backup & Restore

Also very good option. The capabilities of this utility are even wider than the previous one, since you can copy everything from applications to contacts, bookmarks, calendar events, etc. language layouts in the keyboard. Moreover, the “backup” can be either saved on a smartphone or sent to the “cloud” or to a PC. In general, everything is provided.

How to flash Android through recovery

ClockworkMod Recovery- this is an application from the category “ must have". It is a much more advanced alternative standard utility(recovery), present in the composition operating system default. If the latter can only clear the cache and perform updates, then ClockworkMod Recovery allows the following:

edit system components via Android SDK;
create a full system snapshot and use it as a backup;
install third-party firmware;
update hotel system utilities;
create and edit sections in file system.

Download ClockworkMod Recovery for Android

CMR is popular app, so there are versions for almost all smartphone models. How to flash Android through recovery using ClockworkMod Recovery? The instructions are actually very simple and all the work is done in a few steps:

There are situations when rolling back a device to factory settings - best solution emerging problem. You can perform a reset in several ways: through the resettable device itself or using a computer. .

Why reset?

Hard Reset - rolls back the operating system to default values. Performing a reset deletes all files and third party applications, and all settings take the factory settings. By resetting the system, you will receive a clean device, that is, it will be in the same form as it was in the store.

A reset may be useful in the following situations:

The device started to freeze due to large quantity installed programs;
the system began to freeze due to overloaded memory;
there are many files left in the file system from remote applications that take up free space;
the device is for sale, so you need to remove all personal information from it;
I need to reset my password because I forgot it.

As a result, it turns out that the reset must be performed when it is necessary to format the device.

How to save data

Since a system reset erases all data (videos, photos, music, pictures, books and other items) from the device, it is strongly recommended to think in advance about how to save all important information. The easiest way is to transfer everything important files to a memory card or computer. When resetting, items stored on the SD card, even if it is inserted into the device, are not deleted, but just in case, it is better to remove the memory card during the operation.

Another way is to create a backup copy in which all files will be stored. After performing the reset, you can restore your system from a previously created backup, and all items and applications will be returned. The positive side of this method is that you will not lose not only files, but also applications. Negative side- if the reset is carried out in order to clear the device of unused files, then when restoring from a backup, the files that you wanted to get rid of will also be restored.

Copying is done using Google service and only via Wi-Fi, since the amount of information is too large to be downloaded via mobile internet. Go to your device settings, open the Backup & Reset tab and make sure that the automatic backup feature is enabled. The copy will be linked to your Google account, and you can recover from it after you perform the reset. The device itself will prompt you to use the found copy.

Activate backup files

Reset the device

There are several ways to reset your device. The easiest one is through the system settings.

Through settings

This option can be used if you have access to the system. If you have forgotten your password, or the device freezes at the boot stage, preventing you from logging in, then use the method described below.

Video: how to reset Android

Through the recovery menu

If you have a turned off device, but there is no way to turn it on, then this method will suit you:

Via computer

This method will help you enter the recovery menu if in previous method for some reason this could not be done. Connect the device to the computer using a USB adapter and select “Charge only” in the connection type. Download the archive from ADB program and unpack it to any folder whose path does not contain Russian letters. In the resulting folder, create a file called devices.cmd, where cmd is its extension, and write three commands into it:

echo off
adb devices
pause

Run the created file, a command line will open on the screen with the following commands already written:

D:\adb>devices.cmd
adb devices
List of devices attached
HT16GV402012 device
D:\adb>pause
To continue, press any key...

Done, the program is installed. Now open command line as administrator and use it adb command reboot recovery. Your Android device will automatically go to the recovery menu, and further actions The steps that need to be performed to reset are described above in the “Through the recovery menu” subsection.

Enter Recovery Mode via computer

What to do if the password is not reset

If you reset your device in order to remove a password from it that you forgot, and after finishing the procedure the system still asks you to enter it, then there are two ways out of this situation. The first is to enter the wrong password five times, a message will appear on the screen stating that the device is locked for 30 seconds, as well as a “Forgot your password?” button. Click on the button that appears, you will be asked to log in to your Google account, which was previously linked to this phone or tablet. If you enter required account, you will have the opportunity to reset your existing password.

Recovering the device password via Google account

Reset password via ADB

The second option is to reset your password using ADB. How to install this program is described above in the “Via a computer” subsection. When you are done with the installation, launch a Command Prompt as an administrator and run the following options:

adb shell
cd /data/data/com.android.providers.settings/databases
sqlite3 settings.db
update system set value=0 where name=’lock_pattern_autolock’;
update system set value=0 where name=’lockscreen.lockedoutpermanently’;
.quit

If these commands do not help, then use the command adb shellrm /data/system/gesture.key or adb shell
rm /data/system/gesture.key.

How to recover data after a reset

It was previously described that in order to save data you need to create backup copy files or transfer all important elements to another medium. If you did not do this, but at the same time reset the device, then it will most likely not be possible to restore the lost information. But it’s worth a try: get root rights on the device, and download to your computer some program designed to recover deleted files on Android. For example, you can use EASEUS Mobisaver for Android Free.

We restore deleted files With using EASEUS Mobisaver for Android Free

There are two ways to restore your device to factory settings: through the device settings or the recovery menu. You can enter Recovery Mode both from the device itself and using a computer. Before resetting the system, be sure to transfer all important information to a reliable third-party storage device. .

Many users of devices running on Android based, one day they wonder about firmware rollback, especially when it comes to Android versions 4 4 2.

How to rollback on Android 4 4 2 to 4 2 2?

To perform a rollback Android systems, first of all, you need to go to the “Settings” of the gadget and determine its model. Then you will need a computer with an operating system Windows system, Odin software v.3.09, firmware file for of this equipment, which can be downloaded from the internet resource summobile.com on the Firmware page. You can also download here software Odin if it is missing on your computer.

Attention! In the Firmware section, you must select the country in which the gadget was purchased. On the corresponding page, the search mode will show the result of several firmware files, from which you should select the one you need.

After downloading the firmware file, you need to unpack it. Next we carry out preparatory work on the firmware. To do this, turn off your tablet or smartphone. Via the power cable or its USB option connect the gadget to the computer. Let's go to Recovery mode on the device, for which we simultaneously hold down the power button and the volume up button. Using the volume button, we navigate through the menu tabs

"wipedata/factory reset"
"yes/delete all"
"wipe cache partition"
disconnect the cable and select Reboot system now with the power key, then press the power button again and volume up + volume up again

Android 4 4 2 firmware rollback: second stage

To roll back the Android firmware, we next move on to working on the computer. Opening Odin program v.3.09 on behalf of the administrator and connect the equipment to the computer again. By pressing the AP button in the software window, specify the firmware file, and then click on Start. The flashing process has started. After some time, the device will automatically reboot and turn on.

Disable auto-update of the VKontakte application on Google Play;
Delete new version of VK;
Restore old client VKontakte.

Disabling VK auto-update on Google Play:

Run Play Store, go to “Options” by clicking on the corresponding icon (Alternatively, the icon with three horizontal stripes next to the inscription “Google Play”);
Select "Settings" and uncheck "Auto-update apps" (in some versions of the application you need to check the box "Never").

After these steps, the VK application installed from Google Play will no longer be able to update automatically, and you will be able to use the usual old version VK for Android, without worrying that the client interface can change at any time due to next program update.

Uninstalling a new version of VK:

Go to "Settings", then to "Applications", then select the new VKontakte application that disappointed you and delete it from your Android device.

Restoring the old VK client for Android:

Download and install previous version official client social network VK for Android (you can find it by going to).

All. You have returned to your smartphone or tablet the familiar version of the VK application with an interface convenient for you, and it will not go anywhere again without your consent. Automatic updates there is no need to be afraid of the client of the social network VKontakte - you have blocked this opportunity.

New version The VKontakte application allowed us to once again verify that not all changes intended to improve and increase the usability of the application lead to these improvements. The tastes, habits and needs of users are purely individual. Fortunately, you can almost always find a way to return to the old proven version of the program and continue communicating on a social network (in in this case) under normal conditions.

Information from 10/04/2017 : As a result of a change in VKontakte's audio recording policy in older versions of the client no longer available. Official response from VKontakte technical support on this matter.

How to reset on Android?

When your smartphone starts running slowly, running apps for 10 minutes at a time, and won’t open files for completely unknown reasons, it may be time to reset it to factory settings. This procedure returns the phone to the same condition in which you took it out of the box after purchase. All your personal data, such as applications, accounts in various services, etc. will be erased. But problems in the operation of the device will also disappear.

To learn about how to reset on Android, read this article.

Preparing for a rollback

It is necessary to understand that it is impossible to restore factory settings without losing data, so before performing a reset on any device, we recommend backing up all data on the phone to an alternative media. Otherwise, you risk losing them forever.

to save the data that is stored on your MicroSD card, inserted into the device, you just need to remove it from the phone;
if you stored important data directly in the memory of the smartphone itself, then you will need to first connect the phone to the computer using a USB cable, wait until the devices are synchronized, and then copy all necessary files V separate folder on the computer;
if you don't have any device at hand to which you could copy necessary files, you can use one specially designed for such purposes. virtual storage data Google Drive, the app for which is available on Google Play.

Now let's move directly to the procedure for performing a device rollback.

First method

The algorithm for resetting a tablet or smartphone to factory settings is identical:

Go to your phone menu and open Settings.
Find Backup and reset.
Click on Reset settings.
At the same time, you can clear the phone’s memory by checking the appropriate box (relevant for smartphones). This way you can simultaneously delete all your photos, audio and video recordings and other materials that you have ever downloaded to your phone.
Confirm the action by clicking the Reset phone settings button (or simply “reset settings” for a tablet).

As you can see, there is nothing complicated about this. Now let's move on to the second method of performing a rollback to the factory settings of the device.

Second method

Hard reset is forced reset device settings if the operating system is completely out of order and the tablet/smartphone refuses to turn on. Using a specific key combination, the device can be started in mode Recovery mode and use it to perform a rollback.

In other words, if the first method does not suit you, then it’s time to move on to plan B.

Turn off your phone. If your smartphone is frozen, just remove it back cover, remove the battery and after a few seconds insert it back.
Press the key combination that the manufacturer has programmed to perform a factory reset. U different models and manufacturers this combination keys are different. You can find out how a hard reset is performed specifically on your phone model in the instructions for it or on the Internet. The most commonly used combinations are: volume up button+menu+lock/power button; volume down+lock/unmute; menu+lock/shutdown.

These key combinations must be pressed and held until Recovery mode starts.

After you manage to pick up necessary combination keys, a menu will open in front of you. You need to navigate through it using the volume buttons. Select wipe data/factory reset by pressing the lock/power button or the call button context menu. Then use the same button to confirm the selected action.
After the reset process is complete, reboot your phone by selecting Reboot System.
Wait until the phone turns on with factory settings.

If you want to resort to such a thing as a hard reset of an Android tablet, then the algorithm of actions will not be much different from resetting the settings on a smartphone:

If the tablet refuses to turn on, then press two buttons at the same time: Home/power (depending on the device model) and the volume control button (depending on the model, you must press either volume up or down).
Keep the buttons pressed until the operating system logo appears on the screen. After this, release the buttons and wait until the tablet will go in to Recovery mode.
A menu will open in front of you. Select "wipe data/factory reset" using the volume control and confirm with the Home/Power button.

Third method

In some phone models, factory reset can be done by entering engineering, or as they are also called, secret codes. They are used by software developers and testers to reduce time when performing simple operations.

To reset settings using this code, try using the following combinations:

*# * # 7780 # * # *;
*2767 * 3855 #;
*#*#7378423#*#*.