Flash firmware on NGM P503
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How to flash NGM P503?
Why reinstall the firmware?
Errors begin to appear in the Android OS.
Some applications do not open, reinstalling which does not lead to a positive result.
Some applications from the Play Market do not start.
The phone turns off for no apparent 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 website of your phone manufacturer.
On sites where users post custom or official OS.
What should be done before installing the firmware?
Back up your contacts and user data and transfer it to your computer.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Remember your smartphone model.
Fully charge your device.
Find and download the archive with Firmware. And place it on the SD card.
Installing TWRP Recovery
Download the Official TWRP App to your phone from the Play Market. And install this app.
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.
On 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 phone, the application will direct the user to a web page to download the modified recovery environment image file. Download the proposed *.img file.
After downloading the image file, go to the main screen of the Official TWRP App and press the 'Select a file to flash' button. Then we tell the program the path where the file loaded in the previous step is located.
Press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
When the message 'Flash Completed Succsessfuly!' appears on the screen. Click the 'OK' button. The TWRP installation procedure is now complete.
Copy the firmware and other necessary files to the SD card.
Insert a SD memory card into the phone.
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.
The file selection screen is displayed. At the very top is the 'Storage' button, which allows you to switch between types of memory.
Select the location where the files were copied.
Find the file we need 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.
The completion of the installation procedure is indicated by the inscription 'Successful'.
Summary: Aliases: NGM You Color; Type: Mobile; Battery: Li-Ion 2100 mAh; CPU: MediaTek MT6735P, Quad Core 1GHz, ARM Cortex A7, ARM Mali-T720 MP2; Eusar: 0.77 Head; Smart Phone OS: Android 5.1; Dimensions: 141.5 x 71 x 8.4 mm; Formfactor: Bar; Keyboard: Screen; Sidekeys: Volume, Power; Softkeys: 3; Weight: 136 g; Color: Yes; Colors: 16M; Other: Capacitive Touchscreen, Multitouch; Pixel aspect ratio: 2.00; Resolution: 360x640; Display PPI: 294; Screen Size: 5; Type: IPS; Audio: MP3, WAV, OGG; Camera: 13MP, 4128 x 3096; Other: Geo-Tagging, Smile Detection, Self Timer, Panorama, High Dynamic Range (HDR), Face Beauty, Touch Focus, Autofocus, Digital Image Stabilization, Music Player, ...
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