Thank you Sac23 and Afaneh92. I have a bl unlocked SM-N986U (U.S. carrier = AT&T) and am on Sac23_N986U_TWRP_Flashable_ROM_1_17_2021. All is VERY good (thank you), with one notable exception: I cannot get, and never could get, a 5G connection (where partner with a stock ATT 5G reliably gets 5G on her phone at my location). (My 4G-LTE/CA recep is excellent.) ATT SIM card is new and 5G. ATT 5G bands are: n5, n77 and n260.
(1) Does the 1-17-21 ROM have any issues with 5G?
(2) Specifically with those bands?
(3) Would the “Sac23_Custom_Roms_XDA_10_25_21_N986U_OCT_Patch” fix this 5G issue?
(a) If yes, what are ODIN settings, and will the update delete installed apps, root/Magisk/TWIRP?
(b) If no and I install ATT Stock ROM from Sammobile, will I lose root/Magisk/TWIRP?
(4) If I install either 10-25-21 or ATT stock ROM, would I able to restore 1-17-21 Sac23 via TWIRP from TWIRP backup, and without losing apps and root/Magisk/TWIRP?
Thank you so much in advance for your help. Will donate for a complete answer to the above. OK to PM/Telegram.
Yeah, it's not hard to do. Just unlock the bootloader, patch the boot with Magisk and you are good to go. I've just created magisk module today taken SER CSC part (from optics folder) from latest Exynos 986B firmware and put it into TGY of my Snapdragon version + added some tweaks like call recording. Now I have almost SER device