Are building twrp 3.0.0 for the note 2? Because your screenshot says so :eek:
Find the one for your model here: https://twrp.me/Devices/
And convert the .img to .tar from here: ...
Ditto Note 4 ROM (TW 4.4.4) and CM 12.1 (5.1.1) are the best uptil now.
Without actually having root access you're probably not going to be able to do that.. However it "might" work if you pull the build.prop from the phone to your computer using adb then edit it and push it back again using adb and reboot.. That migh...
Try this thread it is a bit more up to date. It includes info about RMM state and has a link to the latest zip file. As for rooting I would suggest using magisk.
Latest Odin 3.13.1
Latest twrp 220.127.116.11 for the s8+
Its the most stable and battery friendly ROM up to date in my opinion!