“Scrapping” a tablet or phone is a partial or complete loss of functionality of the gadget, which may cause not only the main menu of the device to stop functioning, but also the mode Recovery. A similar situation often happens when installing non-working firmware, accidentally deleting system files, failure to obtain chief administrator rights (root access) and in other similar cases.

Recovery methods

To restore a tablet on Android OS from a “bricked” state, you can do the following:

• contact the service center;
• perform resuscitation at home.

Next, we will consider the second option, since most of the procedures that will be offered to you in service center, you can do it yourself, while saving a considerable amount of money on the services of a specialist.

Resuscitating the tablet through the standard Recovery menu

If when loading operating system there is a reset or the tablet hangs on Android logo, so it's not all bad. You can restore a “brick” from this state through a standard environment reanimation Recovery, which is integrated by default into all versions of the Android OS.

To perform the upcoming work, you need to have on hand a previously created backup of the tablet or a special zipped file with firmware that can be downloaded via the Internet. When choosing firmware, you need to make sure that it is compatible with your device.

Having successfully saved the required archive on your computer, you need to transfer it to your tablet. To do this, remove the built-in memory card from the gadget and connect it to the PC via a card reader. The archive is then copied to the SD card in the root directory. The flash drive can be disconnected from the computer and connected to the tablet.

Once everything is ready, you can proceed directly to resuscitation:

After confirming the above actions, the recovery of the tablet from the “brick” state will begin. After rebooting the gadget everything should work. The only problem is all the information previously saved in the device’s memory ( installed applications with settings, notes, SMS, etc.), will be lost forever. To prevent this, periodically do backups your smartphones(tablets) and for greater reliability, additionally save them on your computer’s hard drive.

Restoring a “brick” using CWM Recovery

CWM Recovery(Modrekaveri) is special program, which is installed on the tablet instead of the standard Recovery environment. It fits perfectly with most models of gadgets running Android OS and is an indispensable assistant when resuscitating the device from the “brick” state.

Installation of CWM Recovery

Install this program is it possible through standard menu Android and using personal computer. The first option will not suit us, since the “brick” does not allow us to install anything.

To install Modrekaveri you need:

1. Install drivers for your tablet on your computer. To find out which driver you need, you can connect the gadget to your PC, then go to Device Manager and look necessary information. After this, the device must be disconnected from the PC.
   
2. Get the SP utility Flash Tool. This is a special program that allows you to install custom Recovery on a tablet or phone running Android OS.
3. Download the recovery-clockwork.img file to your PC, which contains all the information necessary for installing CWM Recovery. For each gadget model there is specific version of this program. This must be taken into account when searching for a suitable file. For some devices there is both a classic and touch modification of Modrekaveri. Choose the one you like best.
4. Unzip the downloaded file.
5. Launch SP Flash Tool.
6. In the main window, click “Scatter Loading”, and then specify the path to the unzipped Modrekaveri.
7. Uncheck all the boxes except RECOVERY, and then click on Download.
   
8. Connect the tablet to the computer. Attention! Until this time, it must be disconnected from the PC.
9. The automatic installation of the CWM Recovery program will begin. Upon completion, a green circle will appear on the computer.
   
10. Disconnect the device from the PC.

Having completed the installation of Modrekaveri, you can proceed directly to restoring the gadget from its “brick” state.

Let's look at the case of a laptop rebooting cyclically and how to solve this problem.

We have a laptop from DNS. After turning on the laptop appears startup screen DNS. Next, the Windows 8 operating system begins loading. The loading does not complete, and the laptop goes into reboot. The process is repeated.

Let's immediately check the laptop for overheating. Our laptop rested for a long time, the case is cool, which means that overheating cannot be the cause of a cyclic reboot.

Now, during the next boot of the operating system, you need to press the “F2” button to get into the BIOS.

Go to the “Save & Exit” tab. Select the item “Restore Defaults”.

Press the “Enter” button. In the window that appears, confirm the action by pressing the “Enter” button again. Thus, we reset the laptop settings to the original factory settings.

With this action we force a reboot so that the settings changes take effect.

In our case, the operating system was partially loaded. But a message on the screen said that the system booted incorrectly. The laptop also gave two options further development: System restore and reboot.

Option with reboot again didn't give anything. System restore also didn't help.

In this regard, we move on to another way to solve the problem. It is associated with reinstalling the operating system. We will carry out the reinstallation directly from bootable flash drive(the option of using a disk is possible).

We will install an operating room Windows system 7. To do this, insert our flash drive into the USB connector. During the next system boot, we will again enter the laptop BIOS.

In the next window, select the first item “Boot Option #1”. Click on it. In the window that appears, select the flash drive. In our case it is " USB Disk 2.0". See the image below.

Press the “Enter” button. Now the first device on which the laptop will look for the operating system is a flash drive.

This is confirmed in the line highlighted in the image above.

Go to the “Save & Exit” tab. Then go to the “Save Changes and Reset” item to save changes made. Press the “Enter” button. In the window that appears, confirm the action by pressing the “Enter” button again.

We are already familiar with this operation; you can remember it by referring to the text above near the second image.

If you have ever tried to flash an Android tablet yourself, you have probably come across the concept of “Recovery”. Today we will talk in detail about what this thing is, why it is needed at all, and of course, how to enter it.

What is Recovery

Recovery mode is a special boot mode for Android devices that allows you to full reset operating system settings, reflash the device, make a backup copy of the entire system or its individual partitions (as well as restore these partitions later) and some other things. At the same time, for this mode to work, the functionality of the operating system itself is completely optional. This is why the recovery menu is often accessed when normal mode the device no longer works. And this is precisely why this mode is called “recovery” (from English “recovery”).

How to log into Recovery

To boot recovery, the device's hardware buttons are usually used. Most frequent combinations This:

However, some manufacturers may come up with “something like that,” so you have to search and experiment.

If everything is done correctly, a lying robot will appear on the device screen, on top of which there will be a menu with commands.

Another way to download recovery is special applications, with which you can reboot your smartphone or tablet into recovery mode directly from the operating system itself (for example, Reboot menu). However, it is worth keeping in mind that these applications require .

Navigation in recovery mode is carried out mainly using the volume buttons, and selection using the power button. There are also devices in which only the volume down button is used for navigation, and the volume up button is used to confirm the choice.

To all of the above, it is necessary to add one important detail. The functionality itself recovery mode is by no means universal, and can vary quite a lot depending on the device. Particularly distinguished in this sense are “noname” tablets from China and some B-brands, whose recovery does not have any list of commands at all.

DNS S4003 2SIM runs an operating system Android 4.1. Its performance is rated 5 out of 5 (in its segment). This smartphone is high-performance. Here are the characteristics of the device, instructions on how to reset the settings, flash the device and, of course, how to get root rights to the DNS

Root to DNS S4003 2SIM

How to get root for DNS S4003 2SIM see instructions below.

Below are universal programs to obtain root rights for devices on Qualcomm Snapdragon

• (need PC)
• (Root using PC)
• (popular)
• (root in one click)

If you could not obtain superuser (root) rights or the program did not appear (you can install it yourself) - ask a question in the topic. You may need to flash a custom kernel.

Characteristics

1. Standard: GSM 900/1800/1900, 3G
2. Type: smartphone
3. Operating system: Android 4.1
4. Case type: classic
5. Case material: plastic
6. Number of SIM cards: 2
7. Multi-SIM operating mode: alternating
8. Dimensions (WxHxD): 63x118.5x10.7 mm
9. Screen type: color TFT, 16.78 million colors, touch
10. Type touch screen: multi-touch, capacitive
11. Diagonal: 4 inches.
12. Image size: 480x800
13. Pixels per inch (PPI): 233
14. Type of ringtones: polyphonic, MP3 ringtones
15. Vibration alert: yes
16. Camera: 5 million pixels, built-in flash
17. Camera functions: autofocus
18. Video recording: yes
19. Audio: MP3, FM radio
20. Voice recorder: yes
21. Headphone Jack: 3.5mm
22. Interfaces: USB, Wi-Fi, Bluetooth
23. Satellite navigation: GPS
24. Internet access: WAP, GPRS, EDGE, email POP/SMTP, HTML
25. Processor: Qualcomm MSM8225Q, 1200 MHz
26. Number of processor cores: 4
27. Video processor: Adreno 203
28. Built-in memory: 4 GB
29. Volume random access memory: 1 GB
30. Memory card support: microSD (TransFlash), up to 32 GB
31. Additional SMS features: text entry with dictionary
32. MMS: yes
33. Battery capacity: 3000 mAh
34. Talk time: 6.5 h
35. Waiting time: 250 h
36. Sensors: light, gyroscope
37. Search by book: yes
38. Exchange between SIM card and internal memory: There is
39. Organizer: alarm clock, calculator, task planner

»

Firmware for DNS S4003 2SIM

Official Android firmware 4.1 [stock ROM file] -
Custom DNS firmware -

Firmware DNS S4003 2SIM can be done in several ways. If the firmware file has not yet been uploaded here, then create a topic on the forum, in the section, specialists will help you and add the firmware. Don’t forget to write a 4-10 line review about your smartphone in the subject line, this is important. The official DNS website, unfortunately, will not help solve this problem, but we will solve it for free. This DNS model has a Qualcomm MSM8225Q, 1200 MHz on board, so there are the following flashing methods:

1. Recovery - flashing directly on the device
2. A special utility from the manufacturer, or

We recommend the first method.

What custom firmware are there?

1. CM - CyanogenMod
2. LineageOS
3. Paranoid Android
4. OmniROM
5. Temasek's

1. AICP (Android Ice Cold Project)
2. RR (Resurrection Remix)
3. MK(MoKee)
4. FlymeOS
5. Bliss
6. crDroid
7. Illusion ROMS
8. Pacman ROM

Problems and shortcomings of a smartphone from DNS and how to fix them?

• If the S4003 2SIM does not turn on, for example, you see White screen, hangs on the screensaver or the notification indicator only blinks (possibly after charging).
• If stuck during update / stuck when turned on (needs flashing, 100%)
• Doesn't charge (usually hardware problems)
• Does not see the SIM card (SIM card)
• The camera does not work (mostly hardware problems)
• The sensor does not work (depends on the situation)

For all these problems, contact (you just need to create a topic), specialists will help for free.

Hard Reset for DNS S4003 2SIM

Instructions on how to do it Hard Reset to DNS S4003 2SIM (reset settings). We recommend that you familiarize yourself with the visual guide called on Android. .

Reset codes (open the dialer and enter them).

1. *2767*3855#
2. *#*#7780#*#*
3. *#*#7378423#*#*

Hard Reset via Recovery

1. Turn off your device -> go to Recovery
2. "wipe data/factory reset"
3. “yes - delete all user data” -> “Reboot System”

How to log into Recovery?

1. hold down Vol(-) [volume down], or Vol(+) [volume up] and the Power button
2. A menu with the Android logo will appear. That's it, you are in Recovery!

Reset settings on DNS S4003 2SIM You can do it in a very simple way:

1. Settings->Backup and reset
2. Reset settings (at the very bottom)

How to reset a pattern key

How to reset graphic key, if you forgot it and now you can’t unlock your smartphone DNS. On the S4003 2SIM model, the key or PIN code can be removed in several ways. You can also remove the lock by resetting the settings; the lock code will be deleted and disabled.

1. Reset graph. blocking -
2. Password reset -

Install ClockWorkMod Recovery and getting root rights on an Android tablet is not very difficult. Just follow the instructions and you will succeed. In this matter, we will be helped by ClockWorkMod itself, the superuser application, drivers for our tablet and Odin program. I’ll say right away that the described the method will work not for everyone, but for most Android device owners.

First, let's understand a little about what ClockWorkMod Recovery and root rights are.
ClockWorkMod is a modification of the standard Recovery mode that allows you to install custom (modified) firmware (how to install firmware on a tablet), perform a data reset (wipe), restore and backup your data and much more that you will never do on on your tablet. ROOT rights- analogue of a computer administrator in Windows environment. Allows you to modify and delete files Android systems. If we again draw an analogy with Windows, then this is something like the ability to go into C:\Windows and change hidden files and folders. Using the Superuser helper application, you can grant root rights to other programs.
I will not divide the instructions into two parts and write separately about installing ClockWorkMod Recovery and obtaining root rights on tablets. We will do all this within one instruction at a time. Let's get started.

Installing ClockWorkMod and root rights

1. Download it yourself ClockWorkMod from clockworkmod.com for your tablet model. Just find your model in the list, and click on the version number in the second column, called Download Recovery. Choose what to download very carefully. If you download ClockWorkMod for something other than your tablet, there will be problems. Moving CWM file to a folder whose path does not contain Russian letters.
2. Download the program SuperSU version 0.96. Basically, you can search and download more later version Superuser application, but the proposed version has been tested many times, so it can definitely be trusted.3. Download Odin from here.
4. Download drivers for your tablet from the manufacturer's website (Acer, Samsung, HP, Sony...) and install as administrator.5. Disabling the antivirus and all the left programs in the background, such as player, browser and so on.
6. Copy the one downloaded from step 2 SuperSU to the tablet's memory card.7. Launch Odin and click on the button PDA. Select our ClockWorkMod in the window.
8. Turn off the tablet. Next, press the button Volume+ And Inclusion. Hold until the menu appears. If you need to confirm the action, click Volume-.9. We connect the tablet to the computer in this state (it’s better to connect to the rear USB port if you have a desktop, for laptops it doesn’t matter; and use the original cable, and not the one bought on Ebay, it’s unclear which one). Odin should respond to the connection of the tablet by writing the port number and changing the color of the window to yellow or blue(depending on Odin version).
10. Uncheck Auto Reboot in Odin, do not touch other settings. Click START.eleven. After completing the firmware, turn off the tablet and turn it on again by clicking on Volume- And Inclusion. Keep them pressed again until the menu appears.
12. We entered ClockWorkMod, which we installed a couple of minutes ago. All that remains is to install the Superuser application. To do this, select from the menu install zip from sdcard -> chouse zip from sdcard, and select our SuperSU, which we downloaded in step 2. Confirm the choice.

13. After installation, select reboot system now. The tablet will reboot and you will have root rights and installed ClockWorkMod Recovery on your Android tablet.
If you are unable to install CWM and get root rights, then your tablet does not do this as standard, and you will have to find out how to do it yourself.