I did this partially as a learning exercise, to familiarize myself with the Android build process. I'm still obviously fairly new to the Android scene, but the biggest piece of TWRP that I hoped to utilize was the backup/restore functionality.
Thanks for the explanation. From what I understood, nobody had really attempted a build for the T870 yet. I was unaware that it has been tried, but nobody has gotten it working. Judging from the fact that the TWRP source has been shown to be functional on the S7+, I'd assume that this is still a kernel issue, but knowing that certainly doesn't help anybody find what the actual issue is, haha.There have been many people testing ianmacds build and trying to build twrp for the tab s7 but everybody had this blue screen issue which made the twrp screen unusable but you can use twrp from usb.
Ianmacd and other users tried it with a slightly modified kernel from samsungs source
The "custom ROMs" side of things is something I don't really have any knowledge about. To be honest, I don't have a ton of interest in going down that road, at least at the moment, as I don't really understand what benefits I would get from a custom ROM. From my point of view, I'm much more interested in getting "plain old Linux" running on the device, as that makes it far more powerful and useful, IMO.Welcome to the tab s7/+ dev community, I'm searching for more devs and custom stuff for our devices but sadly we aren't many, I've started trying to make Lineageos for the tab s7+ a while ago (my first from the ground up tree but I maintain ResurrectionRemix official for the OnePlus 6T since january) and I got further in small steps but since I'm stuck at this kernel issue since a month (I don't have much time atm but I'll try harder soon), the kernel doesn't want to load the fstab, I tried los17 and 18, asked many devs about this issue (jimbok77 mentioned a los18 init issue for the galaxy 20 series), this is my first device with dynamic partitions and my last samsung device was a samsung galaxy s5 mini exynos G800F, you can find more about my progress here Interest thread s7+ Lineage os and in the tab s7/+ development telegram chat, and you can find testers at telegram chat by ianmacd.
My plans are to make a working lineageos and then postmarket os, ubuntu touch and jing os.