Requirements : Rooted Samsung Galaxy Note9 Exynos (SM-N960F/FD/N)
WITHOUT ROOT ACCESS THIS APP WON'T WORK.
It is small utility to backup/Restore EFS for Smamsung galaxy NOTE 9

Features :
This tool simply Backup/Restore efs.img partitions.

Installation
-You must have device ROOTED.
-Enable USB debugging
-To make backup - select EFS Backup Restore SMG N8/S8

From next screen you have to press backup option icon, Backup files will be stored to MyEFS folder as well MyEFSbackup/myEFS_mm_dd-yyyy-hr-mm_Device IMEI folder on device storage. This will make backup of required partition Also you will found build.prop file in backup folder, which is just to get information about your ROM while backup was created. Also last backup will be saved in MyEFS folder on device storage.
In case your device varient variant doesn't ed then will get notification about this. from same screen you will have option to mail to developer for issue.

-Auto backup - This is experimental feature. You can enable/Disable it from Backup/Restore menu page. Selecting this option will make auto backup when there is a new ROM version found. ROM version info will be collected from build Display ID. Any manual changes to this also backup will be created

-To restore, This will use last backup stored in Device storage/MyEFS folder. Make sure this folder contains required files. In case you needs to restore earlier backup, you have to manually keep older backup files to Internal storage/MyEFS folder. TO RESTORE backup you need to LONG PRESS restore icon. (to prevent accidentally tap)

Note : This application is not for just playing around, DON'T restore just to check/test application, Restore option must be used only when you really needs it.
If you don't know what is EFS and why you needs to restore, Don't use it. Read XDA thread for further info.

https://forum.xda-developers.com/galaxy-note-8/how-to/guide-how-to-root-note8-efs-backup-t3677038


We can't guarantee this will surely works on every case, you can use at your own risk. Also note that you can restore only backup which you have made on same device only.

// Option A // 4x46x

To IMEI(EFS) Tool Samsung Note 9 (Root) mod from happymod.gamefast.org.
You need enable the option "Unknown Sources".
1. Click on the above link to IMEI(EFS) Tool Samsung Note 9 (Root) mod APK.
2. Save the file in your device s folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B // 1k1543

To IMEI(EFS) Tool Samsung Note 9 (Root) from HappyMod APP, you can follow this:
1. Open your browser and the HappyMod APK file from happymod.gamefast.org - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android s and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search IMEI(EFS) Tool Samsung Note 9 (Root) in HappyMod App.

Why does the app say I have no internet connection? 4i5y53

This issue may occur due to temporary server problems or app glitches. Ensure your device is connected to a stable internet connection.

What should I do if the app is lagging? 593j51

Lagging can be caused by insufficient device resources. Try closing other apps or restarting your device to improve performance.

Why can't I effects? 28681p

ing effects may fail due to network issues or server problems. Check your internet connection and try again later.

How can I fix the network issue while using a VPN? y471i

Sometimes, VPNs can interfere with app connectivity. Try disconnecting the VPN and see if the app works without it.

What can I do if the app keeps crashing? 1y3s2d

If the app crashes frequently, consider clearing the app cache or reinstalling it to resolve potential bugs.

Why can't I access AI modes in the app? 5c6a4j

AI modes may require a stable internet connection. Ensure your connection is strong and try again.

If AI modes are not accessible, it could be due to server issues or your internet connection. Check if other apps are working properly. If they are, the issue might be with the app itself.

Steps to resolve:
1. Check your internet connection by opening a web browser.
2. Restart your device to refresh the network settings.
3. Open the app again and try accessing the AI modes.

What should I do if the app is not ing templates? 508o

If templates are not ing, it may be due to a poor internet connection or server issues. Check your connection and try again later.

Why does the app keep saying 'no internet' even with a connection? r624w

This could be a bug in the app or a temporary server issue. Restarting the app or your device may help resolve this.

Persistent 'no internet' messages can indicate a problem with the app's ability to connect to its servers. Restarting can refresh the app's connection attempt.

Steps to resolve:
1. Close the app completely.
2. Restart your device.
3. Reopen the app and check the connection.

Why does the app crash when importing 4K videos? 391a49

The app may crash due to high resource demands when handling 4K videos. Try using lower resolution files for smoother editing.

4K videos require more processing power and memory. If your device is not equipped to handle such high-resolution files, it may lead to crashes.

What should I do if I keep getting network errors? 693936

Network errors can occur due to unstable internet connections. Try switching to a different network or resetting your router.

Network issues can disrupt the app's functionality. A stable connection is essential for smooth operation, especially when using online features.