Smartphone Rooting and its Advantages
Rooting will give you the superuser control to use your device over an Android subsystem and system apps. For an Android, it means similar to the jailbreaking the device to get access to the root directory of your android mobile.
Though sometimes improper rooting may brick your device or void your device warranty as well (if applicable). But it will give you some unleash power and access to change or edit the system settings, themes, icons, install other mod files, etc.
- You can get access to all files on your Galaxy M40, even the files which present in the root directory of your phone.
- You can increase the performance of your device by overclocking.
- By rooting you can increase battery life by underclocking device.
- Install the Xposed Framework and Xposed module support.
- Uninstall Bloatware on Galaxy M40.
- You can block Ads on any applications like YouTube, Browser.
- By Rooting Galaxy M40, you can View, Edit, or Delete any system file inside the root directory.
Steps To Root Galaxy M40 using Magisk
First of all, you should unlock bootloader on Samsung Galaxy M40 device. Then you can continue with the next steps.
Warning
Unlocking the device bootloader and installing root will void your phone warranty (if applicable). The process also will wipe out all the internal data. So, take a complete backup of device data at first before doing anything. GetDroidTips will not responsible for any kind of bootloops or crashes or any damage to your devices while/after following this guide. Do it at your own risk.
- After Rooting, it may void the warranty of your phone
- Rooting will block the official OTA updates
- Supported model: SM-M405F/DS, SM-M405FN/DS (Global), SM-M405G/DS
[/note]
Download Samsung Galaxy M40 Stock ROM
Here is the link for the same.
Now, once you have downloaded the exact firmware file based on your device model number, you can extract the boot.img file to patch it via Magisk manager app.
Guide to Extract Boot Image File and rename to .tar file
Steps to Create a Patched boot image using Magisk Manager
- Download and install the latest Magisk Manager app.
- Then, connect your device to the PC via the USB cable.
- Copy only the boot.img file from the extracted folder to your device storage.
- Next, open the Magisk Manager app and select INSTALL and choose to install again.
- Tap on “Patch Boot Image File”.

- Go to internal storage and select your device boot image that you moved earlier.
- Now, wait for Magisk to start patching the boot image.
- Once the boot image has been patched, copy the “patched_boot.img” from the internal storage and replace it in the same extracted ROM folder on your PC.
Now, follow the second step to flash the patched boot image file.
- Odin flash tool accepts files in .tar format. So, you have to use 7zip and archive it to .tar format. You can even rename the file as boot.img.tar as shown in the below screenshot.

Steps To Install the Patched Boot Image tar file on Galaxy M40
Now, follow the final or second method to install the patched boot image file on your Galaxy handset. But first, follow the requirements.
Pre-Requirements:
- ROM supported: Samsung Galaxy M40 model only. Don’t try it on other devices.
- Charge your device battery up to 60% at least before doing anything.
- Make sure to take a complete backup without Root of phone storage.
- A PC/Laptop and a USB cable are required.
- Download Latest ODIN tool and install it on your PC.
- Copy the patched boot image file into the ADB/Fastboot folder.
- Download and Install the Samsung USB Drivers on your computer.
Instructions to Root Galaxy M40 Using Magisk
After following the pre-requirements and unlocking the bootloader, in order to Root Galaxy M40 Using Magisk, let’s take a look at the rooting steps.

- When you connect the USB cable you will see a blue sign in Odin.

- Now, load the patched boot.tar file in the AP section.

- Go to Option and see whether the Auto Reboot and F-Reset Time selected or not). If not then select these two. Don’t select re-partition.

- Now, tap on the Start button to root your device.
- Once it’s done, your device will reboot.
- Wait for a few minutes as the first boot will take some time.
- You’re done.
Hope you have rooted your Samsung Galaxy M40 device successfully and you found this guide helpful. Let us know in the comments below in case any issue.