I don't know, rebuilding the iso might break things.
I don't remember how the ps1 game file was set on the disc (for some games, the LBA is important)
Well you know what ? I've looked at the game disc, and it was rebuilded and crafted with ... "Spyro the Dragon" 's game base.
Even the name of some folders were named SPYRO
--------------------- MERGED ---------------------------
Correcting the intro only might fix my game.