Rooting Guide for Samsung I9100 S II – Step-by-Step

Learn how to root your Samsung I9100 Galaxy S II with our detailed 2025 guide. Unlock full control with Magisk, TWRP, and DigitalNerds.

Samsung I9100 Galaxy S II

How to Root Samsung I9100 S II

This guide provides step-by-step instructions to root your Samsung I9100 Galaxy S II using Magisk, Odin, and TWRP. Unlock custom ROMs, rooted apps, and more with DigitalNerds.

1. Prerequisites for Rooting Samsung I9100 Galaxy S II

A Windows PC
A USB cable
At least 60% battery
Samsung USB Drivers installed (Download)
Odin Flash Tool (Download)
Magisk APK (Download)
TWRP Recovery for Samsung I9100 Galaxy S II (Download)
Firmware for Samsung I9100 Galaxy S II (Download)

2. Enable Developer Options, OEM Unlock, and USB Debugging

Go to Settings > About phone > Software information
Tap "Build number" 7 times until you see "You are now a developer!"
Go to Settings > Developer options
Enable "OEM unlocking"
Enable "USB debugging"

3. Unlock the Bootloader on Samsung I9100 Galaxy S II

⚠️ This will wipe your data. Backup everything important.

Turn OFF your phone.
Press and hold VOLUME UP + VOLUME DOWN together.
While holding both buttons, connect your phone to PC via USB.
You will see a WARNING screen.
Press Volume UP to enter Bootloader Unlock mode.
Press and hold Volume UP again to confirm.
Device will reset and reboot.

After reboot, re-enable USB debugging and OEM unlocking if needed.

4. Download and Extract Firmware for Samsung I9100 Galaxy S II

Download the latest firmware for Samsung I9100 Galaxy S II: Download
Extract the zip file. You will get:
- AP_xxx.tar.md5
- BL_xxx.tar.md5
- CP_xxx.tar.md5
- CSC_xxx.tar.md5 or HOME_CSC_xxx.tar.md5

5. Patch AP File with Magisk for Samsung I9100 S II

Install Magisk APK on your phone.
Open Magisk > Install > Select and Patch a File
Select the AP_xxx.tar.md5 file from the extracted firmware.
Magisk will generate a patched file: magisk_patched.tar
Transfer this file to your PC.

6. Flash Patched Firmware via Odin

Reboot device to Download Mode again (same as bootloader unlock steps).
Open Odin on PC.
In Odin:
- AP: magisk_patched.tar
- BL: BL_xxx.tar.md5
- CP: CP_xxx.tar.md5
- CSC: HOME_CSC_xxx.tar.md5 (use CSC_xxx.tar.md5 only if you want to wipe data)
Uncheck "Auto Reboot" in Odin options.
Click "Start" to flash.

7. Boot into Recovery and Reboot to System

After flashing, boot into TWRP recovery manually:
- Press and hold Power + Volume Up while phone is off.
In TWRP:
- (Optional) Wipe data if needed.
- Reboot to system.

8. Verify Root Access for Samsung I9100 Galaxy S II

Open Magisk app.
It should show "Installed" and "Rooted".

Alternate Option for Rooting Samsung I9100 S II

If you're unsure about flashing manually, try a trusted service where professionals handle rooting your Samsung I9100 Galaxy S II remotely. Ideal for avoiding risks with tools like Magisk or TWRP.

🌐 Try it here: https://oneclickroot.com/root-now/

Alternatively, find pre-patched root files for Samsung I9100 Galaxy S II on:
👉 XDA Forums

(Note: Verify compatibility with your Samsung I9100 Galaxy S II firmware version.)

FAQs About Rooting Samsung I9100 Galaxy S II

What is rooting Samsung I9100 Galaxy S II?

Rooting your Samsung I9100 Galaxy S II grants superuser access, allowing you to install custom ROMs, use rooted apps, and customize your device with tools like Magisk or TWRP.

Is rooting Samsung I9100 S II safe?

Rooting Samsung I9100 S II is safe if you follow our guide carefully. Backup data, use verified tools like Magisk, and avoid unofficial firmware to prevent issues.

Can I unroot Samsung I9100 Galaxy S II?

Yes, you can unroot Samsung I9100 Galaxy S II by flashing stock firmware via Odin. Visit DigitalNerds for an unrooting guide.

Troubleshooting Rooting Issues for Samsung I9100 Galaxy S II

Fix Samsung I9100 Galaxy S II Bootloop After Rooting

If your Samsung I9100 S II is stuck in a bootloop, boot into TWRP recovery and wipe cache/data. Reflash the Magisk-patched firmware using Odin.

Magisk Not Installed on Samsung I9100 S II

Ensure you’ve flashed the correct magisk_patched.tar file in Odin. Check compatibility with your Samsung I9100 Galaxy S II firmware version.

You’re All Set!

You've successfully rooted your Samsung I9100 Galaxy S II! Enjoy custom ROMs, rooted apps, and full control with DigitalNerds.

⚠️ Rooting your device may void the warranty and can potentially brick your phone if not done correctly. Proceed only if you understand the risks.

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View Samsung I9100 Galaxy S II Specifications