⚠️Galaxy A51 Root || Unlock Bootloader || Flash Official Firmware [Binary 3] May
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12Fully Working Root Solution
HOW TO ROOT A51 (WORKING EVEN WITH BINARY 3)
First, I would like to thanks @map220v, without his efforts, none of this would be possible. I’m justing putting the pieces together to help others root this phone as he helped me.
Second, this is an ADVANCED process, so I deduce most of you know how to do many things needed in here, so I’ll not explain, for example, how you get your bootloader unlocked.
Tird, I recommend you do this ony if you REALLY can’t use your phone without root, otherwise, wait for TWRP release.
PROS
Root
No bloatware
More space available
Battery drains slowly
Frequent updates
178044 points in Antutu v8
CONS
YOUR WARRANTY IS NOW VOID and blablabla
Poor interface (it's an Android 10 PURE system)
No Samsung’s facilitations/resources/beauty
Screen transitions are flickering (no big deal)
Pre-requisites:
Unlocked bootloader
A full backup (you’ll lose everything stored in your phone)
Both Windows AND Linux (I used Windows installed and Kalix Live USB) OR Windows with Linux Bash System (https://itsfoss.com/install-bash-on-windows/) -tip given by @ToddNachste
Patience (A LOT)
About 30 GB free
Files needed:
Download with Frija or SamFirm THE SAME firmware you’re running now
Download a GSI Android 10 A/B Gapps arm64v8 from (https://github.com/phhusson/treble_experimentations/wiki/Generic-System-Image-(GSI)-list) -I’m using AOSP 10 v215, but I believe it’s working with more GSI’s
LZ4 Extractor (https://github.com/lz4/lz4/releases)
Simg2img (https://forum.xda-developers.com/general/general/dev-simg2img-windows-t3156459)
LPunpack Tool (https://drive.google.com/file/d/1mgEnQqFOajLnRBX2YYsLL11J2-osPKD_/view)
Odin (https://dl2018.sammobile.com/Odin3-v3.14.1.zip)
7zip
Permissive kernel (https://drive.google.com/file/d/1Jq8JeEnzBPCDBjC_ewVxbWjhJ9q4G21G/view?usp=sharing) -thanks to map220v
In Windows:
1) Extract the AP_file.tar.md5 from your firmware.zip file using 7zip
2) Extract the super.img.lz4 file from the AP_file.tar.md5 file using 7zip
3) Put super.img.lz4 file in LZ4 folder and run in CMD the command
lz4.exe -d super.img.lz4 superLZ4.img
4) Put superLZ4.img file in Simg2img folder and run in CMD the command
simg2img.exe -i superLZ4.img -o superSIMG.img
In Linux OR Bash shell:
1) Put superSIMG.img in otatools/bin folder and extract it in Linux terminal using the command
./lpunpack --slot=0 superSIMG.img <destination dir> (I recommend you create a folder for this)
2) Put, in the folder where you extracted superSIMG.img, the GSI file you downloaded and rename it to system.img. Now you should have odm.img, system.img, vendor.img and product.img files in the same folder. You may also need to delete/remane the original system.img file before renaming the GSI file.
3) Now you’re going to make a brand new super.img file containing all 4 files of the previous step. This is a critical and tricky step. Run Linux terminal and type:
./lpmake --metadata-size 65536 --super-name super --metadata-slots 2 --device super:4294967296 --group main:4293513600 --partition system:readonly:1577095168:main --image system=./system.img --partition vendor:readonly:342155264:main --image vendor=./vendor.img --partition odm:readonly:643456:main --image odm=./odm.img --sparse --output ./super.img
Note that in this code, the numbers highlighted in bold are the sizes of the 3 .img files you extracted (odm, vendor and product) in step 2 plus system.img you downloaded/renamed, IN BYTES. Update the code with YOUR files's sizes!
system:readonly:1577095168:main (size of unsparsed system.img in bytes)
vendor:readonly:342155264:main (size of vendor.img in bytes)
odm:readonly:643456:main (size of odm.img in bytes)
as @phhusson stated (thanks!), no need sto use product.img, just supress it at all
--group main:4293513600 (main partition size 1577095168+342155264+643456=2776752512)
*The size of main is the sum of the 4 .img files*
You may face two different problems here:
1) Odm.img file requested a not avaliable space. Just sum and update main’s size.
2) System.img is larger than expected. Just sum and update main’s size again.
Your original super.img file is now created, like Samsung does. Congrats!
Back in Windows:
1) Create, using 7zip, anyname.tar file cointaining just the super.img you created. Simple.
2) Open Odin, untick Auto Reboot, add anyname.tar file to AP, put your phone in Download Mode and flash it. Flash boot(NoForcedEnforce).tar the same way.
3) Reboot your phone, do a Factory Reset in original recovery.
In Android:
1) Install terminal emulator and run the following commands:
su
setenforce 0
getenforce (it should show Permissive)
Job is done.9Latest recommended firmware for latest update faster: (Updated weekly).
WARNING: You can't downgrade anymore once you flashed U3 update !
TWRP is needed to patch the Android 10 Vbmeta_samsung.img
You will need:
-Odin v3.14.1
https://dl2018.sammobile.com/Odin3-v3.14.1.zip
-Galaxy A51 Latest USB Driver
https://developer.samsung.com/galaxy/others/android-usb-driver-for-windows
You want to download latest firmware directly from server? (fast download)
Samfirm 0.4.1 or Frija 1.4.2
https://samfirmtool.com/samfirm-v0-4-1
https://github.com/wssyncmldm/frija/releases
Frija not working ? install both vcredist_x00 for your device !
(Check your windows settings to know which version to install).
(Microsoft Visual C++ 2010 Redistributable Package) and (Microsoft Visual C++ 2008 Redistributable Package)
-https://www.microsoft.com/en-US/download/details.aspx?id=29 (x86) 2008
-https://www.microsoft.com/en-US/download/details.aspx?id=5555 (x86) 2010
-https://www.microsoft.com/en-US/download/details.aspx?id=15336 (64bit) 2008
-https://www.microsoft.com/en-US/download/details.aspx?id=14632 (64bit) 2010
-Open Frija and type in your model (mine is SM-A515F) and your CSC : (mine is LUX).
(All CSC's and models on Samfrew: https://samfrew.com/model/SM-A515F/).
-Download and extract SM-A515XX_1_00000000000000_xxxxxxxxxx_fac.zip
On your device:
If you want to unlock bootloader:
-Go to Settings then to About phone and find your build number.
-Tap on your build number 6 times until you see “You’re now a developer”.
-Go in Developer options > enable OEM unlocking.
-Connect the device to your PC.
-Power off your device with POWER and volume DOWN and directly hold volume UP and DOWN together!
-Device will boot in DOWNLOAD MODE.
-Long press volume UP to unlock the bootloader. This will wipe your data and automatically reboot your device!
If you dont want to unlock bootloader:.
-Download and extract Odin and open it as administrator.
Still in DOWNLOAD MODE:
-Click on BL and select BL_A515FXXXU1AXXX_CL16843479_QB27603640_REV00_user_low_ship_MULTI_CERT.tar.md5
-Click on AP and select AP_A515FXXXU1AXXX_CL16843479_QB27603640_REV00_user_low_ship_MULTI_CERT_meta_OS9.tar.md5
-Click on CP and select CP_A515FXXXU1AXXX_CP14483800_CL16843479_QB27603640_REV00_user_low_ship_MULTI_CERT.tar.md5
(If you want to keep your data don't flash CSC).
-Click on CSC and select CSC_OMC_OXM_A515FXOXM1AXXX_CL16843479_QB27603640_REV00_user_low_ship_MULTI_CERT.tar.md5
-Click on USERDATA and select HOME_CSC_OMC_OXM_A515FXOXM1AXXX_CL16843479_QB27603640_REV00_user_low_ship_MULTI_CERT.tar.md5
-Click on START and wait for installation, when done you can unplug your device.
ROOTYour KNOX status will be tripped if you follow this tutorial...What's knox ? : https://www.google.com/search?q=samsung+knox+explained
-Download the latest stock firmware for your Samsung Galaxy A51 with Samfirm/Frija app (faster) or Samfrew/Sammobile website (way slower).
https://samfrew.com/model/SM-A515F/
-Extract the SM-A515XX_1_EXAMPLE_0000000000_fac.zip file with 7zip or any other unzipper.
-Copy the (AP_A515XXXXU1XXXX_CL00000000_QB00000000_REV00_user_low_ship_MULTI_CERT_meta_OS10.tar.md5) file and transfer it to your internal storage.
-Download and install Magisk Manager APK https://github.com/topjohnwu/Magisk/releases/download/manager-v7.5.1/MagiskManager-v7.5.1.apk
-Open Magisk Manager and go to Install > Install > Select and Patch a file.
-Navigate through the storage and select the extracted AP file.
The firmware will be patched and will be found in Internal Storage/Download/magisk_patched.tar.
-Transfer the patched file to your PC.
-Turn OFF your device and boot into DOWNLOAD MODE.
-In Odin, click on AP and select the patched tar file, Uncheck “Auto Reboot” and click on Install.
The tool will flash Magisk V20 on your Samsung Galaxy A51.
To boot in recovery or boot the system with Magisk installed:
1. Powering up normally → System without Magisk
2. Power + Volume Up → Bootloader warning → Release all buttons → System with Magisk
3. Power + Volume Up → Bootloader warning → Keep holding volume up → Actual recovery4Could you tell how you used lpmake to repack the image? It's always creating an empty image in my case.
lpmake --metadata-size 65536 --super-name super --metadata-slots 2 --device super:4294967296 --group main:4293513600 --partition product:readonly:1516761088:main --image product=./product.img --partition system:readonly:1577095168:main --image system=./system.img --partition vendor:readonly:342155264:main --image vendor=./vendor.img --partition odm:readonly:643456:main --image odm=./odm.img --sparse --output ./super.img
product:readonly:1516761088:main (size of product.img in bytes)
system:readonly:1577095168:main (size of unsparsed system.img in bytes)
vendor:readonly:342155264:main (size of vendor.img in bytes)
odm:readonly:643456:main (size of odm.img in bytes)
--group main:4293513600 (main partition size 1516761088+1577095168+342155264+643456=4293513600)4Vbmeta file that I created that allows RW in every partition. I used the code provided on Ian MacDonald telegram channel
View attachment vbmeta-A515F.tar
