It may be possible to change internal games in a safe way with launchers in bs1.1 with several steps:
(usb on psc) Backup the internal games on usb (can be a long process)
(usb on psc) Check the available space
(usb on pc) Create a list of games somewhere on the usb drive and check the size is lesser than the backup size or the available space (need to leave space for memcards and savestates).
(usb on pc) Create the db file from these folders.
(usb on psc) Remove internal games and move these folders and the newly generated db (long process 2)
(usb on psc) If a problem occured, you could save the psc by reinjecting the backup files.
It may be possible to change internal games in a safe way with launchers in bs1.1 with several steps: