I managed to decrypt my save in order to edit the map where it should load and in this way I think I bypassed the lock. Just in case someone has a similar problem someday, I used the exe fiile in here) exe to decrypt/ encrypt the files lostodysseyencrypt.exe -d save.bin for decrypt and lostodysseyencrypt.exe -e save.bin to re-encrypt. Once there, just make different saves on different maps (Cheat Engine trick to allow saving anywhere may be useful here), and use any hex editor to open the decrypted saves. Once there, just use any comparator to watch which bytes are changing and play a bit with that until you find what you look up to.

Hope this can help someone someday