Flash firmware on M4Tel SS990
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How to flash M4Tel SS990?
Why reinstall the firmware?
Errors begin to appear in the Android OS.
Some installed applications do not open.
Many programs from the Play Market do not start.
The phone restarts or shuts down for no reason.
The phone began to work slowly.
You are not satisfied with the functionality of the stock firmware.
Where can I find the firmware?
On the official website of your phone manufacturer.
On specialized services where users post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data and transfer it to another medium.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Remember your smartphone model.
Fully charge your device. If the battery runs out during the firmware, the device will no longer turn on.
Find and download the archive with Firmware.
Installing TWRP Recovery
Download the Official TWRP App from the Play Market. Download, install and launch the application..
When you start the application for the first time, you must agree to install a new firmware and all the risks associated with this, as well as agree to grant the application Superuser rights and click the 'OK' button.
After moving to the next screen, you need to select the 'TWRP FLASH' item and give the application root rights.
On the main screen of the application, the 'Select Device' drop-down list is available, in which you need to find and select the device model for installing the recovery.
After selecting a device, the application will direct the user to a web page to download the appropriate modified recovery environment image file. Download the suggested *.img file.
When the file is loaded, you need to return to the main screen of the Official TWRP App and press the 'Select a file to flash' button. Select the file downloaded in the previous step.
Press the 'FLASH TO RECOVERY' button and confirm that you are ready to start the procedure - press 'OK' in the question window.
When the message 'Flash Completed Succsessfuly!' appears on the screen. Click the 'OK' button. The TWRP installation procedure is now complete.
Copy the required files to the memory card. Using a PC or laptop card reader.
Insert a memory card into the device.
To reboot in recovery, it is convenient to use a special item in the Official TWRP App menu, accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. We open the menu, select the 'Reboot' item, and then tap on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically.
Firmware via TWRP
Before flashing, it is recommended to clear the 'Cache' and 'Data' sections. This will delete all user data from the device, but avoid a wide range of software errors and other problems. You must press 'WIPE' on the main screen.
Everything is ready to start flashing. Press the 'Install' button.
On the file selection screen, at the very top there is a 'Storage' button for selecting an SD card.
Select the storage to which the files were copied.
Find the file we need and click on it. A screen opens with a warning about possible negative consequences, as well as the item 'Zip signature verification'. This item should be checked by placing a cross in the check-box, which will avoid using damaged files when writing to the phone's memory sections.
The procedure for writing files to the phone's memory will begin, accompanied by logging and filling in the progress bar.
The completion of the installation procedure is indicated by the inscription 'Successful'.
Summary: Aliases: M4Tel E-Motion; Type: Mobile; Battery: Li-Ion; CPU: 1.0GHz; Smart Phone OS: Android 4.1.1; Dimensions: 126 x 66.4 x 12.5 mm; Formfactor: Bar; Keyboard: Screen; Sidekeys: Volume; Weight: 90 g; Color: Yes; Other: Capacitive multi-touch screen; Pixel aspect ratio: 1.50; Resolution: 480x800; Display PPI: 233; Screen Size: 4; Audio: MP3, MIDI, AMR; Camera: 5MP; Videocapture: Yes; Videoplayback: MPEG4, AVI, 3GP; Connectors: 3.5mm Audio, MicroUSB 2.0; Network: 802.11, 802.11g, 802.11n; Features: Google Play, Google Search, Google Maps, Gmail, Email, IM, Youtube, Facebook, Twitter, SMS, MMS, Organizer, Calculator, Calendar, Alarm Clock, Document Viewer, Games, Push Mai ...
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