I'd rather stay on this one. I don't want to regret anything since once I update I can't go back. Whatever this issue is, I don't think it's related to the firmware, as my previously created fpkg still works.
Back in 2021, after many struggles, I managed to dump my own PS4 copy of TLOU2 and kept my fpkg files. Recently I wanted to do it again and see if the process was made easier since I did it a few years ago. I managed to jailbreak my PS4 although...