you need to keep phone connected to PC to boot into TWRP with the button combos - this has been a thing since android 11 so you probably missed the boat on the news if you were out the scene a whileThanks for your effort and for uploading the BUL8 files and guide
I've been waiting for the BUL8 guide to try again but I'm still having the same issue as the old guide which is that I can't access twrp with the hardware buttons on step 3.
All that happens is that after holding vol down and power for 7 seconds, and then holding power and vol up the phone reboots to the 'unlocked bootloader' warning screen and stays there until power is pressed. Then the samsung and android boot screen shows up and it hangs there (can't boot to OS) - so I can't use adb reboot bootloader.
I've tried flashing the files from the original guide, tried the twrp AP posted by pvillasuso, tried the new files, tried pretty much everything.
My bootloader is unlocked, USB debugging is on, and I was on stock Android 12 on an Australian SM-F926B. Odin v3.14.1 dl'd from XDA
Luckily the new files don't wipe any data so I just rebooted to download and flashed stock A12 again to fix the bootloop. But still no root unfortunately.
Side note; crazy that this is my first post in 9 years, xda is very nostalgic for me, it's just been a while since I've cared to root Android phones, and I was with iPhone for a bit. It's all coming back to me though, and seems like some things don't change.