Flash firmware on Samsung Galaxy S III Neo plus I9308I
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How to flash Samsung Galaxy S III Neo plus I9308I?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some installed applications stop opening.
Some programs from the Play Market do not start.
The phone shuts down and restarts for no apparent reason.
The phone slows down a lot during operation.
You are not satisfied with the functionality of the stock (official) firmware.
Where can I find the firmware?
On the phone manufacturer's website.
On specialized resources 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 another medium.
Insert an SD card into the gadget. It must have enough memory for the firmware.
Determine your smartphone model.
Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.
Find and download the archive with Firmware. 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.
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.
Going to the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, click on the 'Select Device' drop-down list, and select 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.
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.
After adding the image file to the program, click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK'.
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.
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 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. Open the menu and select the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button.
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. 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 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.
After completing the installation procedure, a 'Successful' message appears on the screen.
Summary: OS: Android 4.3 Jelly Bean; Processor: Samsung Exynos 4412 1,40 GHz; Number of cores: 4; GPU: ARM Mali-400 MP4 @440 MHz; RAM memory: 1 GB; Internal memory: 7.5 GB; Memory cards: microSD, microSDHC, microSDXC, max 64 GB; Main display: Super AMOLED 16M colors 720 x 1280 px (4.80") 306 ppi; Touchscreen: Yes; Digital camera: 8 Mpx, 3264x2448 px; Flash: Yes, LED; Secondary camera: 1.9 Mpx; Video: MPEG4, H.263, H.264; MP3: Yes; Speakerphone: Yes; Radio: Yes; Bluetooth: Yes, v4.0; NFC: -; GSM frequencies: 850/900/1800/1900; Standard UMTS: 850/900/1900/2100; GPS: Yes; GLONASS: Yes; WiFi: Yes, v802.11 a/b/g/n; EDGE: Yes; GPRS: Yes; USB Yes, v2.0; WAP: Yes, v2.0; IrDA: -; LTE: -; HSCSD: -; HSDPA: Yes ...
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