[GUIDE] Two ways to root oppo a5s (CPH1909)+ Unlock bootloader after security update ( without downgrading )

[ZG089]

Mine doesn't want to let me enter in BROM mode, I can only hear a plug and unplug loop sound when I try to hold Vol UP + Vol down.

Maybe the problem is in the usb driver , did you install the mediatek driver auto installer ?

 

[ZG089]

Mine doesn't want to let me enter in BROM mode, I can only hear a plug and unplug loop sound when I try to hold Vol UP + Vol down.

@Anonymous V Please some suggestions here

 

[jimenezshown]

Maybe the problem is in the usb driver , did you install the mediatek driver auto installer ?

yes I already installed the driver and even try to uninstall and reinstall but it just keep on looping.

 

[jimenezshown]

@Zezo 089 Somehow I managed to enter in BROM mode, using the driver provided in MTK Client Tool (usbdisk driver x64 and MTK Driver) so it was the driver after all. I will proceed to next step after I do a full backup. , Other thing though, if I ever bricked my phone, can I still recover it easily? I already tried rooting other phones before but I'm still not confident so I ask you this just for a peace of mind.

 

[Anonymous V]

@Anonymous V Please some suggestions here

check the usb driver thats usually the problem and looks like bro "@jimenezshown " already manage to fix it

 

[jimenezshown]

Update: I'm on a last step already but this time, I got this error.

 

[jimenezshown]

View attachment 5925403
Update: I'm on a last step already but this time, I got this error.

@Anonymous V @Zezo 089 , any solution guys? only boot is ticked by the way.

 

[jimenezshown]

@Anonymous V @Zezo 089 , any solution guys? only boot is ticked by the way.

turned out, preloader_oppo6765_18511.bin should be on the same location where scatter file is even though it's not tick. Anyway, Thank you @Zezo 089 for this post and for your contribution @Anonymous V . Despite encountering issues then trials and errors, finally I was able to root my device. Thanks again guys.

 

[Anonymous V]

turned out, preloader_oppo6765_18511.bin should be on the same location where scatter file is even though it's not tick. Anyway, Thank you @Zezo 089 for this post and for your contribution @Anonymous V . Despite encountering issues then trials and errors, finally I was able to root my device. Thanks again guys.

View attachment 5925453
View attachment 5925457

nice congrats in rooting your phone bro

 

[Anonymous V]

Hello !
I've discovered a new way to root oppo a5s ( CPH1909) after the new security update which removed the mtk-easy-su root
(NOTE : YOU WILL REQUIRE :
1- THE LATEST FRIMWARE UPDATE TO OPPO A5S
2- A PC / Laptop
3- MTK Client Tool -link will be sent here in comments <uploaded by me>
4 - mediatek driver auto installer (link is provided)
5 - SP flash tool <link is provided>
6 - a usb cable
6 - Scatter File (WILL BE UPLOADED HERE IN COMMENTS )
7 - Magisk Manager for your phone (v.26) <from github>
8 - UNLOCK BOOTLOADER USING MTK CLIENT TOOL (No data wipe needed + STEPS WILL BE PROVIDED HERE TOO)
9 - ( optional) MCT MTK BYPASS REV4 ( BUT DOWNLOAD IT IF THERE IS A PROBLEM FLASHING IN SP FLASH TOOL) + <link is provided>

NOTE BEFORE STARTING : If links have problems or it is inaccessible , please tell me to send new links in comments .
also , MAKE SURE YOUR DEVICE IS UPDATED TO THE LATEST VERSION (A.46) BECAUSE IF YOU FLASHED THE BOOT.IMG (you will know what does this file do here later ) WHICH IT IS FOR THE LATEST UPDATE AND YOUR DEVICE IS OLDER THAN IT , YOUR DEVICE MAY BRICK , AND I AM NOT RESPNSIBLE FOR ANY DAMAGES FOR YOUR DEVICE
but , if anything happens , tell me , i might help you .
So , let's start


STAGE 1 : PATCHING BOOT.IMG

1 - download the latest frimware here
2 - choose the latest version (a.46)
3 - after downloading and extracting the file , you will find many folders > Enter the folder (frimware) , find and copy the boot.img file to your phone
4- patch it by magisk manager
5 - copy the patched boot.img ( usually located in Downloads folder in your phone)to your pc ( note : you will need it later )
6 - replace the patched boot.img with the original one in the folder you have extracted the rom in ( but before it, please backup the original one in an external folder , and also change the patched boot.img to ( "boot.img")
Note : I can upload the boot.img file if you want to save time instead of downloading the whole rom !

STAGE 2 : Installing MEDIATEK usb Drivers

7- open Mediatek driver auto installer
8 - while the program is opening , a window appears which asks yo if you allow the installer to make changes ... blabla , just click allow ( ok)

STAGE 3 : UNLOCKING BOOTLOADER

(NOTE BEFORE STARTING : THERE IS NO DATA WILL BE LOST , AND DO NOT ENABLE THE OEM UNLOCK IN DEVELOPER OPTIONS , THE MTK CLIENT TOOL WILL GIVE AN ERROR DURING UNLOCKING , JUST KEEP IT DISABLED !!!!)

8 - After the program installed the drivers , go to MTK CLIENT TOOL , choose the device name ("OPPO A5S") , choose " UNLOCK BOOTLOADER"View attachment 5914265
9 - turn your phone off , and then press these keys (" VOLUME UP + VOLUME DOWN <<in the same time>> ") and plug your phone in using the usb cable , once you hear a sound from your pc ( the usb connection sound) , you can stop pressing , because the phone is in BROM mode ( which you can flash anything but when you unlock the bootloader first
10 - click "Start" button in MTK CLIENT TOOL in your pc , when you see messages appear on the right of the MTK CLIENT TOOL APP , DON'T UNPLUG YOUR PHONE !!!!

When the progress bar achieves 100% in the program , unplug your phone and press power button , if you found a warning message while booting , so , unfortunately....
YOU SUCCESSFULLY UNLOCKED YOUR BOOTLOADER !!!!! XD
So , do not panic if it appears !
The message will say (" your device is unlocked and cannot be trusted , rebooting in 5 seconds ") and then another message appears (" dm-verity error,
Your android system / device is corrupted, please select whether you want to boot in E10 mode or RESTART mode ")
It will give you two choices , you SHOULD choose the RESTART mode by pressing VOLUME DOWN , and tadaaaa your phone is booting normally and the data DIDN'T LOST AT ALL ( like me

BIG ULTRA NOTE : IF THE WARNING MESSAGE DIDN'T APPEAR , SO YOUR BOOTLOADER ISN'T UNLOCKED Successfully , I ADVICE YOU TO DO THE STAGE 3 STEPS AGAIN AND KEEP AN EYE ON THE MESSAGES APPEARANCE ON THE RIGHT OF THE MTK CLIENT TOOOOL ( IF IT SHOWS THE DEVICE MODEL , THE PROCESSOR , ETC ) SO , CONTINUE THE STEPS UNTIL YOU FINISH STAGE 3 STEPS !

STAGE 4 ( optional) : BYPASS

Note : you might need this stage if you found an error in sp flash tool (" VERIFIED BOOT IS ENABLED") as it is usually doesn't appear in an unlocked device !
View attachment 5914281
1- open MCT MTK BYPASS , choose the chipset ( MT6765 )
2 - REBOOT your phone into brom mode ( vol up + vol down)
3 - connect your device and click start , and done !

Stage 5 ( the last stage) : Flashing

1- open SP FLASH TOOL
2 - locate the scatter file that I'll provide it in comments here !

NOTE ABOUT THE SCATTER FILE : the scatter file which comes with the frimware is CORRUPTED , I've tried to fix it and it worked !
because when I worked with this corrupted scatter file , it gave me an error while flashing !! , just editing it on my way has solved it anyway

3 - you will see a list of many files , just untick EVERY THING EXCEPT FOR THE BOOT.IMG (Make sure it is the patched one)
4 - BOOT your phone into brom mode (turn it off , press volume up + volume down , connect it with your pc)
5- once you hear the usb connection sound from your pc , click on "DOWNLOAD" button , and wait until a correct sign (√) appears in a window
6 - REBOOOOT
7 - let's Celebrate!

--thanks to the user @Anonymous V for being online when i applied these steps , he was answering every question i ask.

-- if you want anything , or need some help , type in comments here , and I'll be available .

(First time typing a thread )

bro @Zezo 089 new suggestion add this in your tutorial where they need to put the preloader.bin in the same folder as the patched_boot.img and the scatter file and only tick the boot and dont include the preloder.bin to avoid error sometimes sp flash tool wont let you flash if it cant detect the preloader bin like the error that was encountered by @jimenezshown

 

[jimenezshown]

The message will say (" your device is unlocked and cannot be trusted , rebooting in 5 seconds ") and then another message appears (" dm-verity error,
Your android system / device is corrupted, please select whether you want to boot in E10 mode or RESTART mode ")

I was wondering if we can get rid of this message after we rooted the device?

 

[ZG089]

@Zezo 089 Somehow I managed to enter in BROM mode, using the driver provided in MTK Client Tool (usbdisk driver x64 and MTK Driver) so it was the driver after all. I will proceed to next step after I do a full backup. , Other thing though, if I ever bricked my phone, can I still recover it easily? I already tried rooting other phones before but I'm still not confident so I ask you this just for a peace of mind.

Yep
But data will be lost
But maybe there's a way to unbrick (recover) the phone after bricking without losing the data , but

 

[ZG089]

turned out, preloader_oppo6765_18511.bin should be on the same location where scatter file is even though it's not tick. Anyway, Thank you @Zezo 089 for this post and for your contribution @Anonymous V . Despite encountering issues then trials and errors, finally I was able to root my device. Thanks again guys.

View attachment 5925453
View attachment 5925457

You are welcome
Enjoy
If you wanna ask about anything, please tell me and @Anonymous V !

 

[ZG089]

bro @Zezo 089 new suggestion add this in your tutorial where they need to put the preloader.bin in the same folder as the patched_boot.img and the scatter file and only tick the boot and dont include the preloder.bin to avoid error sometimes sp flash tool wont let you flash if it cant detect the preloader bin like the error that was encountered by @jimenezshown

Oooooooooh
Right
Ok

 

[ZG089]

I was wondering if we can get rid of this message after we rooted the device?

I have the file
Seconds and i'll send it

 

[ZG089]

turned out, preloader_oppo6765_18511.bin should be on the same location where scatter file is even though it's not tick. Anyway, Thank you @Zezo 089 for this post and for your contribution @Anonymous V . Despite encountering issues then trials and errors, finally I was able to root my device. Thanks again guys.

View attachment 5925453
View attachment 5925457

bro @Zezo 089 new suggestion add this in your tutorial where they need to put the preloader.bin in the same folder as the patched_boot.img and the scatter file and only tick the boot and dont include the preloder.bin to avoid error sometimes sp flash tool wont let you flash if it cant detect the preloader bin like the error that was encountered by @jimenezshown

Done ,guys

 

[ZG089]

I was wondering if we can get rid of this message after we rooted the device?

Download meeee
You'll need to flash this lk.bin file
The file which is built-in the phone system has the error message , but after @Anonymous V edited it, you can flash the file which you can download above and tadaaa , the message is gone !

 

[Anonymous V]

I was wondering if we can get rid of this message after we rooted the device?

yes there is a way to remove it, bro @Zezo 089 has the file i send to him its a modified lk.img or lk.bin to removed that message while booting you can ask him about that

 

[Anonymous V]

Download meeee
You'll need to flash this lk.bin file
The file which is built-in the phone system has the error message , but after @Anonymous V edited it, you can flash the file which you can download above and tadaaa , the message is gone !

so it did work on you right?

 

[Anonymous V]

Download meeee
You'll need to flash this lk.bin file
The file which is built-in the phone system has the error message , but after @Anonymous V edited it, you can flash the file which you can download above and tadaaa , the message is gone !

@jimenezshown just flash this file the way you flash the boot image