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Flash firmware on Samsung Galaxy Z Flip 4

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How to flash Samsung Galaxy Z Flip 4?


Why reinstall the firmware?

Errors in the operation of the Android OS begin to appear.

Some applications will not open.

Some programs from the Play Market do not start.

The phone turns off for no apparent reason.

The phone began to slow down a lot.

You want to update your firmware.





Where can I find the firmware?

On the official website of the manufacturer.

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 your computer.

Insert an SD card into your phone to write the firmware to it.

Remember your smartphone model.

Charge your phone fully. If the battery runs out during boot, the device will no longer turn on. It will be difficult to restore it.

Find and download the archive with Firmware. 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 need to give consent to future manipulations, as well as to give consent to granting 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.

TWRP

On the main screen of the application, select 'Select Device', and find your phone model.

After selecting the phone, the program will redirect the user to a web page to download the corresponding image file of the modified recovery environment. 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.

Now press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.

When 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 device.

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

TWRP

Before flashing, you need to clear the 'Cache' and 'Data' sections, press 'WIPE' on the main screen. You will delete all user data from the phone, this will avoid software errors and other problems.

Now you can start flashing. Press the 'Install' button.


TWRP

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 you copied the files..



TWRP

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, this is 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: Operating system: Android 12, One UI 4.5; Processor: Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510); Chipset: Qualcomm SM8450 Snapdragon 8 Gen 1 (4 nm); Internal memory: 128GB 8GB RAM, 256GB 8GB RAM; External memory: No; GPU: Adreno 730; Type: Foldable Dynamic AMOLED 2X; Size: 6.7" inc; Resolution: 1080 x 2640 px; Display colors: 16M; Screen area: 101.5 cm2; Screen format: (height:width); Screen to body ratio: %; PPI /points per inch/: 0 PPI; Touchscreen: capacitive touchscreen; Network: GSM / CDMA / HSPA / EVDO / LTE / 5G; Network: 2G - GSM 850 / 900 / 1800 / 1900   CDMA 800 / 1900 3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100   ...

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