I installed magisk on my phone with no issue whatsoever, but after attempting to install TWRP the phone has started bootlooping. I know I need to flash the stock firmware via Odin, but as it is I don't know how to get into the download mode while it's bootlooping as it goes to the "This phone has custom firmware installed" screen... It could even be the case that I just need to hard factory reset the phone to get it to work.
