- Sep 8, 2017
Team Win Recovery Project
#include <std_disclaimer.h> /* * Your warranty is now void. * * I am not responsible for bricked devices, dead SD cards, * thermonuclear war, or you getting fired because the alarm app failed. Please * do some research if you have any concerns about doing this to your device * YOU are choosing to make these modifications, and if * you point the finger at me for messing up your device, I will laugh at you. */
- Please read the whole main post & related ones before proceed and follow the guide as it is wrote. I will not offer support for any issues that have been already stated.
- Your Knox Warranty Bit will be blown once you flash this or others custom binaries, preventing you to use Knox TZ Features. It can't be reset in any way, so think twice before flashing this.
- Samsung Firmware OTA (aka System Updates) will no longer work once you flashed custom binaries.
- Bugs can be reported here in XDA or via our Telegram Group. Please be more clear as possible and make sure you provide detailed info when reporting bugs (device variant and logcat).
- If you like my work please hit the "Thanks" button to support me.
- First, make sure your phone isn't RMM Locked.
- Download Odin3 v3.13.1, Samsung USB Drivers, latest TWRP's tar for your variant, latest no-verity-opt-encrypt zip, latest Magisk.zip and RMM Bypass zip by Black Mesa, and copy all of them to your external sd card.
- Go to Settings App, Developer Options and enable OEM Unlock (If you don't see Developer Setings, go into About phone>Software info and tap "Build number" 10 times to show Developer Options menu).
- Do a backup of all your important data and files in your phone.
- Shutdown the phone. Once it's off, Power it On in Download Mode (Connect your phone to your PC, press and hold Power, Vol + and Vol - buttons together )
- Open Odin3, go in Option section and untick "Auto-reboot". Once that click the "AP" button and select the TWRP tar you downloaded before, then press the "Start" button.
- Once Odin3 finished to flash the recovery (you should see a "PASS" message), force reboot your phone (Press and hold Power and Vol - buttons together) and once the screen is off, press and hold Power and Vol + buttons together to boot in TWRP.
- Once TWRP is booted you first need to decrypt your /data partition. To do so touch Wipe>Format Data and follow the instructions in screen.
- Once it finished go back at the home screen and touch Reboot>Recovery. TWRP should be able to mount your data partition. Now flash the no-verity-opt-encrypt, Magisk(necessary to prevent bootloops) and RMM Bypass zip you downloaded before (touch Install and select each zip to flash it)
- You're now able to reboot to your OS without re-encrypting /data partition and without RMM Prenormal lock.
Check Post #2.
Join the Telegram Chat group for Galaxy M series: https://t.me/GalaxyMSeries
- Samsung Open Source Centre for kernel source code
- TeamWin for their awesome recovery
TWRP for Galaxy M20, Tool/Utility for the Samsung Galaxy M20
Stable Release Date: 2019-05-08
Last Updated 2019-05-08