I’m not sure if this is just me but I used one disc to burn 4k83 and another to burn 4k77. The discs I used were verbatim BD-R DL inkjet printable discs, the burner is the pioneer BDR-XD05B, and I used imgburn as the software. When I put these discs in my ps3 and my ps4, they are shown to be invalid. I’m not sure if this is just a problem with those systems or if the iso may be corrupt.
You are not the first person to have this issue. Let me check something…