ROOT METHOD POSTED BELOW IN POST #2
Giving credit where credit is due:
@Dark98 for compiling the TWRP.img
@☆KØŁØЯΛĐØ☆ providing device files + testing/porting
@topjohnwu for Magisk
DISCLAIMER: This is NOT in Odin flashable .tar format. Due to sporadic updates in security & Oreo, Odin won't be much help here.
This has been tested & confirmed working on device build R16NW.J737PVPU1ARG3. It should work on other versions.
UPDATE: This will work on any Oreo version as well, including the new April 1, 2019 R16NW.J737PVPS3ASC2 update.
The patched_boot.img.tar I've attached will not work if you are on a different version of Oreo. You must provide your own patched_boot.img.tar that coincides with your respective version.
Proof of port is in the screenshot below (I've underlined the device build)
There is a downside & an upside:
- The downside is that after you flash TWRP & reboot, you will lose root.
- The upside is that TWRP will remain so all you need to do to regain root is flash the Magisk-v18.1.zip in Recovery.
- In order to flash, you need an app that will do so without booting into recovery. Flashify.apk is the ideal choice for this procedure.
- Flash TWRP in Flashify but do not reboot from the app itself. Power off your device & boot into [TWRP] Recovery manually.
PAY ATTENTION TO THESE NEXT FEW STEPS!!!
- Extract the twrp.img from J737P_TWRP.zip
- Flash through Flashify, then boot into TWRP for the first time
- Now that you have booted into TWRP the first time, Swipe to allow modifications
- Navigate to Wipe > Format Data > type yes when prompted (this will not delete any files you have in your Internal Storage)
- Once the format is completed, go to TWRP home screen & Reboot > Power Off
DO NOT REBOOT TO SYSTEM
- Once device powers off, reboot back into TWRP (yes you will boot into recovery twice)
If you fail to immediately boot back into TWRP, you will brick & have to start over. The fiirst reboot is to clear out (wipe) the /Data partition to make room for your new recovery. Wiping will not delete any internal storage items. However, it will return a value of 0 for /Data. The second boot is to secure TWRP as your new Recovery, as well as fix the /Data return value.
- Now that you have secured TWRP, go ahead & make a TWRP backup as a safety precaution before you reboot. The backup could be considered "stock" with TWRP as the Recovery. The reason being is that you will lose root after formatting /Data. No worries, you will get it back.
After creating the backup, follow these next steps very carefully!!
You will now flash Magisk-v18.1 to regain root. With the new security measures Samsung put in late 2017, you will need to flash 2 .zip files after to ensure that root sticks.
YOU NEED TO FLASH THESE FILES IN ORDER. DO NOT WIPE CACHE AFTER EACH FLASH. DO NOT REBOOT AFTER EACH FLASH. FLASH EACH PACKAGE ONE AT A TIME. WAIT UNTIL THE 3RD FLASH IS COMPLETE & THEN REBOOT DEVICE. IT WILL TAKE SEVERAL MINUTES SO BE PATIENT.
(Still in TWRP)
- Go to Home & select Instal
- In this order, flash one at a time:
DO NOT WIPE THE CACHE
Screenshots of proper installation (in order):
- Reboot device normally. If you do not flash the dm-verity & RMM .zip files in order, you will bootloop & have to start over.
- When you get to your home screen, you will receive a notification to update Magisk. Update by either selecting the notification or manually through Magisk Manager.
- Allow Magisk to install the update; do not update through TWRP.