Flash firmware on LG Optimus L1 II Dual
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How to flash LG Optimus L1 II Dual?
Why reinstall the firmware?
Errors in the operation of the Android OS begin to appear.
Some installed applications stop opening.
Many applications from the Play Market do not start.
The phone restarts by itself for no reason.
The phone started to work slowly.
You want to update your firmware.
Where can I find the firmware?
On the phone manufacturer's website.
On specialized services on which various developers lay out custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data and transfer it to your computer.
Insert SD card. An SD card is needed to write firmware to it.
Remember your smartphone model.
Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.
Download Firmware and Place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App via the Play Market. And run this application.
When you start the application for the first time, you must agree to install the firmware, as well as agree to grant the application Superuser rights and click the 'OK' button.
Going to the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, select 'Select Device', and find your phone model.
After selecting a device, the program redirects the user to a web page to download the corresponding image file of the modified recovery environment. 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 your choice.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now complete.
Transfer the firmware and other necessary files to the SD card.
Insert a SD memory card into the phone.
To reboot into recovery, you need 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 click on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically.
Firmware via TWRP
Before flashing, you need to delete all user data from the phone, this will avoid many problems. press 'WIPE' on the home screen.
Now you can start flashing. Press 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. 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 corrupted files when writing to the phone's memory sections.
The procedure for flashing the phone will begin, accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.
The completion of the firmware installation procedure is indicated by the inscription 'Successful'.
Summary: OS: Android (4.1.2); Dimensions: 4.04 x 2.32 x 0.52 inches (102.6 x 58.9 x 13.3 mm); Weight: 3.70 oz (105 g)the average is 4.8 oz (137 g); Side Keys: Left: Volume control; Colors: Black, White; Physical size: 3.0 inches; Resolution: 240 x 320 pixels; Pixel density: 133 ppi; Technology: IPS LCD; Screen-to-body ratio: 46.09 %; Touchscreen: Capacitive, Multi-touch; Features: Light sensor, Proximity sensor; Camera: 2 megapixels; Features: Smile detection, ISO control, White balance presets; Camcorder: Yes; System chip: Qualcomm Snapdragon S1 MSM7225AB; Processor: Single core, 1000 MHz, ARM Cortex-A5; Graphics processor: Yes; System memory: 512 MB RAM; Built-in storage: 4 GB; ...
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