First of all, I want to tell you that I'm not very familiar with rooting but have just a bit experience flashing custom roms, so please go easy on me.
I have done some research and found a couple things that I couldn't find answers for:
1) First one is that apparently you need your bootloader unlocked/ OEM unlocking enabled in developer options, however since I upgraded to Oreo in last August, that option disappeared. I've tried two methods for making it appear that I've found online (keeping phone up for 7 days straight and reverting time back) but none worked. I've read somewhere that if you downgrade to Nougat, enable it then re update to Oreo your bootloader will remain unlocked. So, can someone confirm this? Can you downgrade with a locked bootloader? And if so, can someone guide me through it? (Additional question: will the downgrade reset user data?)
2) After unlocking bootloader you need to flash TWRP but I have so many questions on that. First: I couldn't find a TWRP for oreo. Does it work regardless of os version? Second: I found a guide from XDA that is written long ago, and it says "make a full backup of your system, including EFS before flashing". How do you backup without flashing it tho? All guides are about using either a custom recovery or rooted app.
3) Do you really need TWRP? I mean, can't you flash Magisk via Odin/ADB directly, perhaps without unlocking bootloader? What happens if I use install command from ADB?
4) So does tripping knox fuse achieve anything other than killing the nonexistent system updates and samsung guarantee? I want to make sure Samsung health is going to operate.
I have done some research and found a couple things that I couldn't find answers for:
1) First one is that apparently you need your bootloader unlocked/ OEM unlocking enabled in developer options, however since I upgraded to Oreo in last August, that option disappeared. I've tried two methods for making it appear that I've found online (keeping phone up for 7 days straight and reverting time back) but none worked. I've read somewhere that if you downgrade to Nougat, enable it then re update to Oreo your bootloader will remain unlocked. So, can someone confirm this? Can you downgrade with a locked bootloader? And if so, can someone guide me through it? (Additional question: will the downgrade reset user data?)
2) After unlocking bootloader you need to flash TWRP but I have so many questions on that. First: I couldn't find a TWRP for oreo. Does it work regardless of os version? Second: I found a guide from XDA that is written long ago, and it says "make a full backup of your system, including EFS before flashing". How do you backup without flashing it tho? All guides are about using either a custom recovery or rooted app.
3) Do you really need TWRP? I mean, can't you flash Magisk via Odin/ADB directly, perhaps without unlocking bootloader? What happens if I use install command from ADB?
4) So does tripping knox fuse achieve anything other than killing the nonexistent system updates and samsung guarantee? I want to make sure Samsung health is going to operate.
