Flash firmware on Utok 351D
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How to flash Utok 351D?
Why reinstall the firmware?
Errors in the Android OS start to appear regularly.
Some installed applications do not open.
Many programs from the Play Market do not work.
The phone restarts by itself for no reason.
The phone slows down a lot during operation.
You want to update the firmware, as it does not suit you in terms of functionality.
Where can I find the firmware?
On the official Internet resource of the phone manufacturer.
On sites where third-party developers post custom operating systems.
What should be done before installing the firmware?
Create a backup copy of user data and transfer it to your computer.
Insert an SD card into the gadget. It must have enough memory for the firmware.
Find information about your smartphone model.
Fully charge your phone battery.
Download archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App via the Play Market. And run this application.
At the first start, you need to give consent to future manipulations, as well as consent to granting the Superuser rights to the application. Check the checkboxes and press the 'OK' button.
After moving to the next screen, select the 'TWRP FLASH' item and provide the application with root rights.
On the main screen of the application, click 'Select Device', and find your phone model.
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 download is finished, you need to return to the main screen of the Official TWRP App and click on the 'Select a file to flash' button. Select the file downloaded in the previous step.
Press the 'FLASH TO RECOVERY' button and confirm your choice.
The recording process is very fast, and upon completion, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Transfer the necessary files to the SD memory card. Using a PC or laptop card reader, it will be much faster.
Insert a SD memory card into the phone.
To reboot into recovery, you need to enter the menu accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. Select the 'Reboot' item, and then click 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.
Now you can start flashing. Click the 'Install' button.
The file selection screen appears. At the very top there is a 'Storage' button for selecting an SD card.
Select the storage to which the files were copied.
Select the firmware file and click on it. A screen opens with a warning about possible negative consequences, you need to check the item 'Zip signature verification', which will avoid using corrupted 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.
When the procedure for installing the firmware is completed, the message 'Successful' appears on the screen.
Summary: GSM frequencies: 900 1800; Standard UMTS: 2100; Standard LTE: no; Type: Touch; Dimensions (W x H x D): 118.00 x 62.00 x 11.00 mm; Weight: 137.00 g; Main display: Color / IPS TFT16M colors320 x 480 px (3.50") 165 ppi; Display protection: -; Talk time (max.): 2G: 360 min. (6.0 h); Stand-by (max.): 2G: 300 h (12.5 days); Standard battery: Li-Ion 1200 mAh; Internal memory: 4 GB; RAM memory: 512 MB; Memory cards: yes, microSD, microSDHC (up to 32 GB); Operating system: Android 4.2.2 Jelly Bean; Processor: MediaTek MT6572M; Processor clock: 1.00 GHz; Number of cores: 2; GPU: ARM Mali-400 MP1 @500 MHz; Touchscreen: yes; SAR (10g): 0,77 W/kg; DualSIM: yes; ...
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