✓ Verified Hardware SM-X306B 🔧 Stock Rom 📅 Sep 08, 2026

Samsung SM-X306B (SM-X306B) SM-X306B Factory Stock Firmware – Version X306BXXSDDZH1 for Android 16

Verified firmware package package • 7 GB • Released Sep 08, 2026 • Compatible with Android 16 • Stable Production Build.

⚡ Download Stock Firmware
Samsung SM-X306B (SM-X306B) authentic hardware render for software, driver, and manual downloads
SM-X306B
✓ Verified Device Profile

Samsung SM-X306B

Samsung SM-X306B (SM-X306B) authentic hardware render for software, driver, and manual downloads
  • Model Code: SM-X306B
  • File Package: Firmware package (vX306BXXSDDZH1)
  • Compatibility: Android 16
  • Integrity Status: ✓ Checksum & Compatibility Verified

Download genuine SM-X306B stock firmware update (X306BXXSDDZH1). This package contains the verified, unmodified factory ROM for model SM-X306B (Region: India (INS)), released directly by Samsung.

Firmware Package Specifications

  • Device: SM-X306B
  • Model Code: SM-X306B
  • Region / CSC: India (INS)
  • PDA / Build Number: X306BXXSDDZH1
  • Operating System: Android 16
  • Security Patch Level: 2026-08-05
  • Release Date: 2026-09-08
  • Archive File Size: 7.34 GB (7,886,071,344 bytes)

Manufacturer Changelog & Security Fixes

  • Security
  • The device is protected with improved security.

Odin 4-File Flashing Slots

This firmware package includes all 4 standard factory Odin partitions for safe system recovery and unbricking:
  • BL (Bootloader): Flashes the bootloader and primary hardware initialization tables.
  • AP (System Image): Contains the system OS, vendor files, and One UI user interface.
  • CP (Modem / Phone): Flashes the cellular baseband radio and Wi-Fi modem firmware.
  • CSC (Carrier Config): Select CSC_* to perform a clean factory wipe, or select HOME_CSC_* to upgrade firmware without losing your photos, apps, or settings.

Quick flashing overview for SM-X306B

  1. Download & Extract: Download the verified X306BXXSDDZH1 package for SM-X306B (SM-X306B) and extract the tar.md5 binaries.
  2. Boot Download Mode: Turn off device. Hold Volume Down + Volume Up simultaneously while connecting the USB-C cable to your PC, then press Volume Up at the turquoise warning screen.
  3. Odin Slot Mapping: Open Odin 3.14.4 as Administrator. Assign BL, AP, CP, and CSC slots (HOME_CSC to preserve personal data, or CSC for a clean factory wipe).
  4. Execute & Reboot: Click Start in Odin. Await the green PASS! confirmation (approx. 4–7 minutes) until your device automatically restarts.
Verified Master Guide ⏱️ 7 min read

Need the Complete Odin Firmware Flashing Guide?

Follow our verified, in-depth tutorial with detailed visual steps, prerequisite checklists, Download Mode instructions, and solutions for common errors.

Read In-Depth Guide →

Platform Note: These instructions apply to systems running Android 16. Verify compatibility before proceeding.

Compatibility and scope

  • File type: Firmware
  • Version: X306BXXSDDZH1
  • Supported OS: Android 16
  • System architecture: ARM64-V8A
  • Download size: 7 GB
  • Release date: Sep 08, 2026

Samsung SM-X306B (SM-X306B) firmware version X306BXXSDDZH1 (SM-X306B Factory Stock Firmware) supports Android 16 on ARM64-V8A systems.

📜 SM-X306B Firmware Release History & Changelog Archive

Firmware update chronicle, OS version progression, and security patch trajectory for SM-X306B (Region: India (INS)):

10 Verified Builds
💡 Click Changelog details to expand verified release notes (Scroll horizontally on smaller screens →)
Build Number (PDA) & ChangelogAndroid OSRelease DateSecurity PatchStatus
X306BXXSDDZH1
Changelog details (2 notes)
  • Security
  • The device is protected with improved security.
 Android 16 Sep 08, 2026 🛡️ Aug 2026 ✓ Active
X306BXXSCDZG1
Changelog details (2 notes)
  • Security
  • The device is protected with improved security.
 Android 16 Jul 30, 2026 🛡️ Jul 2026 Previous
X306BXXSBDZF3
Changelog details (2 notes)
  • Security
  • The device is protected with improved security.
 Android 16 Jul 01, 2026 🛡️ Jun 2026 Previous
X306BXXUADZE3
Changelog details (10 notes)
  • One UI 8.5
  • Visual design
  • Fresh new look
  • One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus on what matters.
  • Bixby
  • Smarter device control
  • Talk to Bixby in your own words. Bixby is now better at finding the setting or feature you need, even if you don’t use exact commands or feature names. Just say what you need and let Bixby do the rest.
  • Ask anything, anytime
  • Whether you need a quick answer or detailed information, just ask Bixby for an instant response. There's no need to spend time on multiple searches or switching between apps.
  • Conversation history
 Android 16 May 28, 2026 🛡️ May 2026 Previous
X306BXXSACZB6
Changelog details (2 notes)
  • Security
  • The device is protected with improved security.
 Android 16 Mar 19, 2026 🛡️ Feb 2026 Previous
X306BXXS9CZA3
Changelog details (2 notes)
  • Security
  • The device is protected with improved security.
 Android 16 Feb 03, 2026 🛡️ Jan 2026 Previous
X306BXXS8CYK1
Changelog details (2 notes)
  • Security
  • The device is protected with improved security.
 Android 16 Dec 17, 2025 🛡️ Dec 2025 Previous
X306BXXU7CYJ3
Changelog details (10 notes)
  • One UI 8.0 (Android 16)
  • Personalization
  • Enhanced Lock screen widgets
  • Do more on your Lock screen with brief widgets. 2 x 2 size widgets are now available, and the widget area is now larger so you can add even more widgets. You can choose either a horizontal or vertical widget layout.
  • 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
 Android 16 Nov 03, 2025 🛡️ Sep 2025 Previous
Support & Repair Information

🛠️ Need Hardware Repair or Diagnostic Assistance?

If your SM-X306B is experiencing physical damage, battery degradation, screen flickering, charging port faults, or motherboard issues that cannot be resolved through software or user manuals, contact support assistance:

💻 Screen & Display Repair Original AMOLED/LCD display replacement with genuine parts.
🔋 Battery Replacement Certified battery health diagnostics and fresh battery replacement.
📍 Service Center Locator Locate verified walk-in service desks in your city or region.
📞 Care Helpline & Booking Schedule a doorstep pickup or speak with a certified technician.

📋 Package Specifications & Build Details

Verified firmware binary structure and component tags for SM-X306B:

✓ Verified Build
Build Number (PDA) X306BXXSDDZH1
CSC Build Code X306BOXMDDZH1
Baseband / Modem (CP) X306BXXSDDZH1
Operating System Android 16
Release Date September 08, 2026
Security Patch Level 🛡️ August 2026
Package Format 📦 4-File Factory Binary (.zip)
Total Package Size 💾 7.34 GB

Archive Structure & Odin Slot Guide

BL: Bootloader binary
AP: System core & recovery
CP: Modem & baseband
CSC: Regional carrier configuration

✨ Build Highlights

  • Security
  • The device is protected with improved security.

Frequently asked questions

Quick Answers
When should I update firmware on SM-X306B?

One UI firmware updates provide Android security patches, new operating system features, bug fixes, and battery optimizations.

How can I update firmware on SM-X306B?

You can update over-the-air (OTA) via Settings → Software update, or perform a complete verified system update via PC using Samsung Smart Switch.

Will updating firmware erase my user data?

Standard OTA and Smart Switch updates preserve your user data. However, performing a full backup before major OS updates is always recommended.

💡

Always verify the file matches your exact device and intended usage before installation or flashing.

Download SM-X306B Factory Stock Firmware

Verified package for SM-X306B • Version X306BXXSDDZH1 • Released Sep 08, 2026:

⚡ High-Speed Download (7 GB) 📱 Odin-Ready ZIP 📦 4-File Factory Binary 🌐 Dual Cloud Mirrors
🔒 SHA-256 Verified ⚡ Fast Cloud Delivery 🛡️ 100% Clean & Verified ✓ Factory Stock Package
⚡

Odin Flashing Toolkit & Slot Guide

✓ Official 4-File Binary

To flash this official stock ROM package on SM-X306B (SM-X306B), use the verified companion tools and slot mapping below:

🛠️ Odin Flash Tool v3.14.4 Official Windows flashing utility for Samsung Android firmware.
Download & Guide →
🔌 Samsung USB Driver Enables PC detection in Download Mode (Odin ID:COM port).
Download USB Drivers →
🛡️ Samsung Smart Switch Full desktop device backup before performing a firmware flash.
Download Smart Switch →

Odin 4-File Slot Mapping

BL (Bootloader) Select file starting with BL_...
AP (System Image) Select file starting with AP_...
CP (Modem / Radio) Select file starting with CP_...
CSC or HOME_CSC HOME_CSC retains data; CSC wipes device.
⚠️ Pro Caution: Ensure your battery is charged above 50% and do not unplug the USB cable until the green PASS! message appears in Odin.

📦 Related Packages for SM-X306B

Explore other verified hardware drivers, utilities, and manuals available for this model:

Browse All Hub Files →
Hardware & Repair Support

Experiencing Hardware Damage or Component Failure on SM-X306B?

If software flashing or driver installation does not resolve your device issue, compare genuine screen, battery, and motherboard replacement costs or visit a verified Samsung service center.

💰 View Spare Parts Price → 📍 Locate Service Center →
Authorized Repair Network

Ready to Repair SM-X306B?

Find verified Samsung service centers across 646+ Indian cities with genuine OEM parts inventory, express turnaround, and in-warranty zero-cost claims.

📍 Locate Nearest Service Center →
Popular Service Cities: Delhi • Mumbai • Bengaluru • Kolkata • Chennai • Hyderabad • Ahmedabad • Pune

Looking for other versions or file types?
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