Samsung Galaxy S21 FE 5G G990EXXSIGYI4
SM-G990E 1 country Android 15

Samsung Galaxy S21 FE 5G G990EXXSIGYI4 Firmware

Build Date:

Samsung Galaxy S21 FE 5G G990EXXSIGYI4 is an Android 15 firmware for Turkey (TUR). It is the same firmware configured per region and carrier (CSC). Find your country below, verify the file and download for free. Compared with the previous build G990EXXSIGYI3, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-G990E is available: G990EXXSOHZH4.

OS updates guaranteed until: Android 16Security updates until: Jan 12, 2027
Download firmware
8.9 (228)1,362 times
Android 15
OS Version
2025-09-23
Build Date
2025-09-01
Security patch
1
Countries
1
CSC codes
I (18)
Bootloader binary

Bootloader binary I (18). Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy S21 FE 5G use bootloader binary O (24) (latest: G990EXXSOHZH4). If your device already runs binary O (24), this build cannot be flashed.

All regional downloads

Pick your region (CSC) to download the matching firmware package.

Paste your current build number from Settings > About phone (About tablet) > Software information, or the output of *#1234#.
    MODEM/CP Version: G990EXXSIGYI1
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-G990E
    TUR Turkey
    		G990EOJMIGYI3 2025-09-24 7.638 GiB
    SM-G990E_4_20250912204131_k5ksouicbx_fac.zip
    		Download

    No matching downloads

    How to flash G990EXXSIGYI4

    • G990EXXSIGYI4 has bootloader binary I (18). Your device must run binary I (18) or lower: it is the 5th character from the end of your current build number.
    • CSC: Use CSC for a clean install, to change the region (CSC code), to downgrade or to repair a device that does not boot.
    • HOME_CSC: Use HOME_CSC to update the same model and region while keeping your data. Back up anyway: a failed update can still require a reset.
    • The Download Mode key combo depends on the model: see all combos.
    Full flashing guide
    Beware: Manually flashing firmwares may brick your device. Use it at your own risk and follow our tutorial steps.

    What's new in G990EXXSIGYI4

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    Security patch: September 2025

    SMR Sep-2025 fixes 70 vulnerabilities, 3 of them critical. Android Security Bulletin: 58, Samsung Semiconductor: 1, Samsung-specific issues (SVE): 11.

    Most severe Samsung fixes:

    • critical Out-of-bounds Write in libimagecodec.quram.so (CVE-2025-21043)
    • high Out-of-bounds write in libsavsvc.so (CVE-2025-21034)

    All fixes and Galaxy models with this patch

    Device specifications

    • Launched withAndroid 11
    • Display diagonal16.3 cm (6.4")
    • Display resolution2340 x 1080 pixels
    • RAM8 GB
    • Rear camera resolution12 MP
    • Rear camera typeTriple camera
    • Battery capacity4500 mAh
    • Weight177 g

    Specifications of SM-G990B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    G990EXXSIGYI4 is Android 15 firmware for Samsung Galaxy S21 FE 5G, released for Turkey (TUR). It includes the 2025-09-01 security patch. Samsung built it on 2025-09-23.

    SMR Sep-2025 fixes 70 vulnerabilities, 3 of them critical. Android Security Bulletin: 58, Samsung Semiconductor: 1, Samsung-specific issues (SVE): 11.

    No. A newer build for SM-G990E is available: G990EXXSOHZH4. Install it instead of G990EXXSIGYI4 unless you need this exact version. The previous build was G990EXXSIGYI3.

    Download the package for your region (CSC) and unzip it. In Odin, load each file into the slot with the same name: BL, AP, CP (if the package has one) and CSC, or HOME_CSC to keep your data. Odin checks the built-in checksum of every .tar.md5 file before flashing. The download is 7.638 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy S21 FE 5G must be on bootloader binary I (18) or lower.

    This build uses bootloader binary I (18). It can be flashed on a Samsung Galaxy S21 FE 5G running binary I (18) or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 2 other builds of this model use the same binary, so you can switch between them in both directions.

    Other builds and changelog for Samsung Galaxy S21 FE 5G

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    One UI 8.0 (Android 16)
    Productivity

    Check stock prices without unlocking
    Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day.

    Easier file sharing with Quick Share
    It's never been easier to send and receive files. Tap the Quick Share button in quick settings to get started. You can receive files while the Quick Share screen is open and send files to others directly from Quick Share.

    Sticky notes
    Add quick annotations on top o...

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security

    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    Model firmware by region

    New firmware for other devices

    All latest builds