Flash firmware on Samsung Galaxy S II I9100G
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How to flash Samsung Galaxy S II I9100G?
Why reinstall the firmware?
Errors begin to appear in the Android operating system.
Some applications stop opening.
Some 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 Internet resource of the phone manufacturer.
On specialized resources 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.
Find out the exact model of your smartphone.
Charge your phone fully.
Find and download the archive with Firmware. Place it on the SD card.
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, select the 'TWRP FLASH' item and provide the application with 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 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, go 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 SD card. Using a PC or laptop card reader, it will be much faster.
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.
The file selection screen appears. 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..
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: Operating System: Android v2.3 (Gingerbread); SIM Slot(s): GSM; Network: 3G: Available, 2G: Available; Dimensions: 125.3 (H) x 66.1 (W) x 8.49 (T) mm; Weight: 116 grams; Colours: Black; Screen Size: 4.3 inches; Screen Resolution: 480 x 800 pixels; Pixel Density: 217 ppi; Display Type: Super AMOLED Plus; Touch Screen: Capacitive Touchscreen; Chipset: TI OMAP 4430; Processor: Dual core, 1.2 GHz; Graphics: PowerVR SGX 540; RAM: 1 GB; Internal Memory: 16 GB; Expandable Memory: Up to 32 GB; Resolution: 8 MP; Flash: LED Flash; Image Resolution: 3264 x 2448 Pixels; Shooting Modes: Continuos Shooting; Camera Features: Digital Zoom, Smile detection, Digital ...
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