Hello. This way aosp Works? And you do not have a problem with the phone? And Can all root operations be implemented in it? ... For example, changing the address?
Root possibility?
- Thread starter cldkrs
- Start date
u ask not the right things:
first he must send us the firmware (downloadlink link)
then he must send us the magisk, - superuser or twrp version, what he used (download link too).
then STEP by STEP, how he rooted the phone !
I havent been able to root it yet but my guess is that we habe to unlock the bootloader through a diagnostic way that would be the same way the enginners fix etc...the phones. Im just glad i can flash the stock firmware using odin. Next phone I'll be getting is the new one plus ;-D
Well, I might just have found a way, Make a super.img that's Read/Write and then fix the recovery's fstab to make it Read/Write to all partitions like system and vendor, then push SuperSU2.zip and try to flash, which should work, and I'm gonna try it
Actually, it turned out to be a problem with how Magisk works on A21S.
You should check out this thread. This worked on Korean (SM-A217N) A21S.
You should check out this thread. This worked on Korean (SM-A217N) A21S.
I've rooted my A217F U5 using this thread, here is result :
Root File For A217FXXU5BUA5 attached.
Attachments
Last edited:
Sorry But Could You Guide Me Further ?Please follow this tutorial instead.
Root for Samsung a21s
Root your Samsung a21s with this method.
You can't use Magisk or the Stock ROM/Firmware with this method, instead you will use SuperSu and a customized pre-rooted ROM/GSI. For this, you need to backup all your data eventually. For now that's the only way to get this phone rooted. For more information about GSI click here.
UPDATE:
Now you can root your phone flashing this GSI with Odin. So no need to do the tutorial. It will install a pre-rooted AOSP GSI on your phone.
If you already flashed the Android 11 GSI and want to downgrade, unfortunately you need to wipe your data. But if you already this Android 10 GSI and want to update to 11 you don't need to wipe your data.
Downloads:
Android 10 AOSP pre-rooted (Android 10 is highly recommended because it's more stable and faster.) (Download Screenshots)
Android 11 AOSP pre-rooted
Root Confirmations.
https://forum.xda-developers.com/showpost.php?p=83929761&postcount=62 > Theqtest
https://forum.xda-developers.com/showpost.php?p=83931905&postcount=69 > Eklipz3
https://forum.xda-developers.com/showpost.php?p=83940297&postcount=80 > PamelaGirl
thenks for sharing your confirmations.
Follow this tutorial to flash any GSI ROM on your A21s using fastboot. If you are stock on fastboot (can't boot to bootloader) you need to follow the below tutorial or flash the super.tar above.
Backup all your data.
Requirements:
1. Virtual Box
2. Linux ISO (Mint or Ubuntu)
3. 7-Zip ZS Installer
4. Simg2img : thenks MrWaehere
5. Unlock your bootloader
6. GSI Android 10 A/B Gapps : Download only arm64, A/B GSIs.
Choose any ROM. Some does not work, so I recommend to use the Official Android 10 or 11.
Android 10 AOSP 10.0 v222 "system-quack-arm64-ab-gapps.img.xz" with Gapps. (USB does not work on this ROM, only ADB)
7. Odin
Download all the required files and tools Samsung_A21s.zip.
Don't forget to install 7-Zip ZS.
Sharing a folder from Windows to Linux
Fist you need to use both Windows and Linux using Virtual Box and share a folder from Windows to Linux.
Install Linux on Virtual Box following this tutorial and open the Terminal Win + T and run this code. Recommended Linux Mint.
Installing VirtualBox Guest Additions
Type your Password.Code:sudo su root
Type Y and wait downloading...Code:apt install build-essential dkms
Code:mount /dev/cdrom /media/cdromCode:cd /media/YOURUSERNAME/VBox_GAs_6.1.16This will install the "VirtualBox Guest Additions" on your Linux, so without it we can't share the folders.Code:./VBoxLinuxAdditions.run
Type :
And reboot your Linux.Code:adduser YOURUSERNAME vboxsf
Create a folder on your Windows Desktop called "Samsung".
At the top bar of your Virtual Box click Devices and Shared Folders > Shared Folders Settings, then click the plus icon, select and add your Samsung folder, enable Auto-mount, click OK and close.
A drive will be mounted on your Linux as "sf_Samsung".
Now Save the state of your Linux. (Exitting)
File extraction
Download your stock ROM and extract the super.img.lz4 file from AP_A217XXXXXXXXXX_XXX_XXXX_REV00_user_low_ship_MULTI_CERT_meta_RKEY_OS10.tar.md5 with 7-Zip ZS.
Extract the "super.img.lz4" using the 7-ZIP ZS and copy the original super.img to your Samsung folder.
Extract all files from A21_Samsung.zip to your Samsung folder including your "AOSP ROM .IMG".
Convert super.img to raw
Open CMD Win + X, and select Command Prompt (Admin) or press A.
Type:
.Code:cd C:\Users\%USERNAME%\Desktop\Samsung
then:
.Code:simg2img super.img super.raw
Wait.
Move the super.raw to Samsung_Files folder.
Extracting super.raw
Now Start your Virtual Linux, open Terminal Win + T and type:
Code:sudo su rootCode:cd /media/sf_Samsung/System_FilesWait the extraction and switch to your Windows.Code:./lpunpack --slot=0 super.raw /media/sf_Samsung/System_Files
Getting all the bytes from files and creating a modified super.img
Verify if the folder System_Files has this 4 files odm.img, system.img, vendor.img and product.img. Delete the product.img, we don't need it.
Rename your orginal System.img to Original_System.img, and rename your extracted AOSP ROM to System.img then move it to System_Files folder. We will switch the system.img.
Right click on each file > Properties, and copy all sizes in bytes of the original super.img, odm.img, Original_System.img and vendor.img. We don't need the AOSP ROM bytes.
Example:
--device super: super.img : 5557452800
--image system= Original_System.img : 3340271616
--image vendor= vendor.img : 474976256
--image odm= odm.img : 4349952
Calculate your Original_System.img bytes + vendor.img bytes + odm,img bytes.
(3340271616 + 474976256) + 4349952 = 3819597824 . And replace the bytes below "3819597824" with your result.
You need to update the below code with the actual sizes in bytes of your files.
Update the bytes and run
Code:./lpmake --metadata-size 65536 --super-name super --metadata-slots 2 --device super:5557452800 --group main:3819597824 --partition system:readonly:3340271616:main --image system=./system.img --partition vendor:readonly:474976256:main --image vendor=./vendor.img --partition odm:readonly:4349952:main --image odm=./odm.img --sparse --output ./super.img
Flash the modified boot.tar, and the 2 vbmeta.tar via Odin inside of "Flash it" folder, reboot and boot to the Download Mode again. If bootloop flash only the boot.tar and flash the stock vbmeta downloading here.
Use 7-Zip to archive the new super.img to .tar, flash it via Odin (AP), wait your phone restarts.
That's it have fun.
Notes
I not an expert on this, I just sharing my research I found on the Internet that worked for me. I not responsible for any damage on your phone. It does not stuck or phone, if anything occurs just flash your stock regional ROM through Odin.
If this tutorial did not work, you did something wrong or your phone is not supported.
"Anyway until there is no TWRP or Magisk for this phone you can use it as an alternative.
And I'm sorry for my English. If you don't understood please search for "./lpmake --metadata-size 65536" on the Internet, and you'll find out more tutorials like it but not about for this phone, use it as reference.
I Don't Know How To Add Super SU Without TWRP
Not sure for all U5 but I've rooted that build of A217F. and works perfect. Just don't update Magisk.
install attached magisk manager after flash.
Last edited:
I'm Trying To Make A Prerooted GSI But I Don't Know How To Add SuperSU To The Rom
The patched magisk app has been updated to fix issues with Magiskhide, uninstall, and to add recovery key combo on boot. You should get the latest apk from this thread and update to it.
- Apr 13, 2016
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... i test it, its NOT working ! U have NO acess to Root !Are you gong to try it?
Try it and et us know!
Please follow this tutorial instead.
Root for Samsung a21s
Root your Samsung a21s with this method.
You can't use Magisk or the Stock ROM/Firmware with this method, instead you will use SuperSu and a customized pre-rooted ROM/GSI. For this, you need to backup all your data eventually. For now that's the only way to get this phone rooted. For more information about GSI click here.
UPDATE:
Now you can root your phone flashing this GSI with Odin. So no need to do the tutorial. It will install a pre-rooted AOSP GSI on your phone.
If you already flashed the Android 11 GSI and want to downgrade, unfortunately you need to wipe your data. But if you already this Android 10 GSI and want to update to 11 you don't need to wipe your data.
Downloads:
Android 10 AOSP pre-rooted (Android 10 is highly recommended because it's more stable and faster.) (Download Screenshots)
Android 11 AOSP pre-rooted
Root Confirmations.
https://forum.xda-developers.com/showpost.php?p=83929761&postcount=62 > Theqtest
https://forum.xda-developers.com/showpost.php?p=83931905&postcount=69 > Eklipz3
https://forum.xda-developers.com/showpost.php?p=83940297&postcount=80 > PamelaGirl
thenks for sharing your confirmations.
Follow this tutorial to flash any GSI ROM on your A21s using fastboot. If you are stock on fastboot (can't boot to bootloader) you need to follow the below tutorial or flash the super.tar above.
Backup all your data.
Requirements:
1. Virtual Box
2. Linux ISO (Mint or Ubuntu)
3. 7-Zip ZS Installer
4. Simg2img : thenks MrWaehere
5. Unlock your bootloader
6. GSI Android 10 A/B Gapps : Download only arm64, A/B GSIs.
Choose any ROM. Some does not work, so I recommend to use the Official Android 10 or 11.
Android 10 AOSP 10.0 v222 "system-quack-arm64-ab-gapps.img.xz" with Gapps. (USB does not work on this ROM, only ADB)
7. Odin
Download all the required files and tools Samsung_A21s.zip.
Don't forget to install 7-Zip ZS.
Sharing a folder from Windows to Linux
Fist you need to use both Windows and Linux using Virtual Box and share a folder from Windows to Linux.
Install Linux on Virtual Box following this tutorial and open the Terminal Win + T and run this code. Recommended Linux Mint.
Installing VirtualBox Guest Additions
Type your Password.Code:sudo su root
Type Y and wait downloading...Code:apt install build-essential dkms
Code:mount /dev/cdrom /media/cdromCode:cd /media/YOURUSERNAME/VBox_GAs_6.1.16This will install the "VirtualBox Guest Additions" on your Linux, so without it we can't share the folders.Code:./VBoxLinuxAdditions.run
Type :
And reboot your Linux.Code:adduser YOURUSERNAME vboxsf
Create a folder on your Windows Desktop called "Samsung".
At the top bar of your Virtual Box click Devices and Shared Folders > Shared Folders Settings, then click the plus icon, select and add your Samsung folder, enable Auto-mount, click OK and close.
A drive will be mounted on your Linux as "sf_Samsung".
Now Save the state of your Linux. (Exitting)
File extraction
Download your stock ROM and extract the super.img.lz4 file from AP_A217XXXXXXXXXX_XXX_XXXX_REV00_user_low_ship_MULTI_CERT_meta_RKEY_OS10.tar.md5 with 7-Zip ZS.
Extract the "super.img.lz4" using the 7-ZIP ZS and copy the original super.img to your Samsung folder.
Extract all files from A21_Samsung.zip to your Samsung folder including your "AOSP ROM .IMG".
Convert super.img to raw
Open CMD Win + X, and select Command Prompt (Admin) or press A.
Type:
.Code:cd C:\Users\%USERNAME%\Desktop\Samsung
then:
.Code:simg2img super.img super.raw
Wait.
Move the super.raw to Samsung_Files folder.
Extracting super.raw
Now Start your Virtual Linux, open Terminal Win + T and type:
Code:sudo su rootCode:cd /media/sf_Samsung/System_FilesWait the extraction and switch to your Windows.Code:./lpunpack --slot=0 super.raw /media/sf_Samsung/System_Files
Getting all the bytes from files and creating a modified super.img
Verify if the folder System_Files has this 4 files odm.img, system.img, vendor.img and product.img. Delete the product.img, we don't need it.
Rename your orginal System.img to Original_System.img, and rename your extracted AOSP ROM to System.img then move it to System_Files folder. We will switch the system.img.
Right click on each file > Properties, and copy all sizes in bytes of the original super.img, odm.img, Original_System.img and vendor.img. We don't need the AOSP ROM bytes.
Example:
--device super: super.img : 5557452800
--image system= Original_System.img : 3340271616
--image vendor= vendor.img : 474976256
--image odm= odm.img : 4349952
Calculate your Original_System.img bytes + vendor.img bytes + odm,img bytes.
(3340271616 + 474976256) + 4349952 = 3819597824 . And replace the bytes below "3819597824" with your result.
You need to update the below code with the actual sizes in bytes of your files.
Update the bytes and run
Code:./lpmake --metadata-size 65536 --super-name super --metadata-slots 2 --device super:5557452800 --group main:3819597824 --partition system:readonly:3340271616:main --image system=./system.img --partition vendor:readonly:474976256:main --image vendor=./vendor.img --partition odm:readonly:4349952:main --image odm=./odm.img --sparse --output ./super.img
Flash the modified boot.tar, and the 2 vbmeta.tar via Odin inside of "Flash it" folder, reboot and boot to the Download Mode again. If bootloop flash only the boot.tar and flash the stock vbmeta downloading here.
Use 7-Zip to archive the new super.img to .tar, flash it via Odin (AP), wait your phone restarts.
That's it have fun.
Notes
I not an expert on this, I just sharing my research I found on the Internet that worked for me. I not responsible for any damage on your phone. It does not stuck or phone, if anything occurs just flash your stock regional ROM through Odin.
If this tutorial did not work, you did something wrong or your phone is not supported.
"Anyway until there is no TWRP or Magisk for this phone you can use it as an alternative.
And I'm sorry for my English. If you don't understood please search for "./lpmake --metadata-size 65536" on the Internet, and you'll find out more tutorials like it but not about for this phone, use it as reference.
!!! THIS WORKS NOT WITH THE EU VERSION OF THE A21S (Is Tested) !!!
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1
Power Off the Phone
Press Vol + & Vol - & connect the USB-Cable
Then Follow the instructrions ( Long Press Vol + for Unlock Mode)
and its unlocked.1
This Video is from Taiwan
I have confirmed that the version is to use the first version to modify to reach ROOT
AP_A217FZHU1ATF1
https://samfw.com/firmware/SM-A217F/BRI1
First off I want to give a big thanks for the support, and all the positive and quick responses. I feel really good about being a part of this thread with so many helpful and friendly people.
I will get the stock rom flashed and follow your advise to the letter. I will get this device rooted!
Thanks
1First off I want to give a big thanks for the support, and all the positive and quick responses. I feel really good about being a part of this thread with so many helpful and friendly people.
I will get the stock rom flashed and follow your advise to the letter. I will get this device rooted!
Thanks
I thank you Pamela for your kindly words. If needing help in the process just call.
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