Open your save by selecting the “…” button. Right click your save in the main window and select the Decrypt All Files. Select Yes to decrypt the save, and ignore any errors about a disc hash key. You can now use a game modding tool or hex edit your save.
then, How do I transfer data from RPCS3 to ps3?
Put the RPCS3 save file on /dev_usb00x/PS3/SAVEDATA or copy it in your current profile folder on HDD at /dev_hdd0/home/000000XX/savedata/. Open Apollo Tool & the save file should appear in the save file list. Click on it to make the patch options appear, choose to PFD resign the save file. That should be all.
hence,
indeed
and
Discussion about this post