Flash firmware on LG E977 Optimus G
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How to flash LG E977 Optimus G?
Why reinstall the firmware?
Errors in the Android OS start to appear regularly.
Some applications stop opening.
Some applications from the Play Market do not start.
The phone restarts or shuts down by itself.
The phone began to work slowly.
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 website of the manufacturer.
On certain sites where developers post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of all personal information: contacts, photos and transfer it to another computer.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Find information about your smartphone model.
Fully charge your device's battery.
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.
In the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, click 'Select Device', and find your phone model.
After selecting the phone, the application will redirect the user to a web page to download the modified recovery environment image file. Download the proposed *.img file.
After downloading the image file, return 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.
Now 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.
Transfer the necessary files to the SD card. Using a PC or laptop card reader.
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 is displayed. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the location where you copied the files. Press the OK button.
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 damaged files during recording.
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: Design: Classic; SIM cards standard: Micro Sim; GSM: 850 900 1800 1900; HSDPA: 850 900 1900 2100 HSPA; LTE: 850 2600; Dimensions (H/L/W): 131.9 x 68.9 x 8.5 mm, vol. 77 cm³; Display: LCD IPSColor (16M) 768x1280px (4.7") 318ppi; Touch screen: yes; Weight: 145 g; Time GSM (talk/stand-by): 15 / 335 hrs. (14.0d); Battery: Li-Po 2100 mAh; Built-in memory: 32 GB; Memory card: MicroSD max. 32 GB; RAM memory: 2 GB; Operating system: Android 4.1; Chipset: Qualcomm MDM9615; CPU 1 frequency: 1500.0 MHz(4-core); GPU Type: Qualcomm Adreno 320; GPRS: Class 12; EDGE: Class 12; HSDPA: 42 Mb/s; HSUPA speed: 5,76 Mb/s; HSCSD: no; Wi-Fi: 802.11 a/b/g/n; Bluetooth: 4.0; NFC: yes ...
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