Der User @ChendoChap hat das Tool "PS4 Save Mounter" released.
Download: (inclusive der debug.bin)
https://github.com/ChendoChap/Playstation-4-Save-Mounter/releases
Ich verstehe das so, dass man damit seine savegame datei austauschen kann - d.h. ein savegame von einer andern Konsole verwenden.
Siehe Punkt - 13) After you're done copying/replacing files click 'Unmount'
Dieses Tool editieret nicht das savegame selbst.
Ich bin damit aber nicht ganz sicher, und konnte es auch noch nicht selbst testen.
Also, wenn jemand dazu etwas ergänzen/richtig stellen möchte - Bitte gerne!
Update 21.11.18:
Link zu Update Post
Hier die readme:
# Playstation 4 Save Mounter
## Summary
This program allows you to mount save data as READ/WRITE
## Prerequisites
* PS4 5.05
* FTP Client
## Instructions
1) Load ps4debug
2) Start a game
3) Load FTP
4) Open the tool
5) Enter the ip of your ps4 and press click 'Connect'
6) Click 'Refresh Processes' and select your game in the combobox
7) Click 'Setup'
8. Click 'Find Dirs'
9) Select the save you want to mount in the combobox
10) Select the mount permission in the combobox (default is READ ONLY)
11) Click 'Mount'
12) Your save is now mounted in /mnt/pfs/ & in /mnt/sandbox/{title}/savedataX
13) After you're done copying/replacing files click 'Unmount'
**Some games use another save format, they have an sce_ prefix in their name. they won't show up as search results**
**This can probably be patched but I was too lazy**
Here's a workaround
1) go to /user/home/{userid}/savedata/{titleid}
2) make a copy of the sce save: 2 files, the bin file(96KB), the sdimg file
3) rename them
"sce_sdmemory.bin" -> "temp.bin"
"sdimg_sce_sdmemory" -> "sdimg_temp"
4) go to /system_data/savedata/{userid}/db/user and download the database.db file
5) open it with an [sqlite editor
6) add a new record in the savedata table
7) fill in the data and you're done
8. replace the original database with the newer one
9) Click 'find dirs' again, it should now add a temp entry in the combobox
10) proceed as usual
11) go to /user/home/{userid}/savedata/{titleid}
* delete the original sce_sdmemory.bin and sdimg_sce_sdmemory
* rename temp.bin to sce_sdmemory.bin and temp to sdimg_sce_sdmemory
12) replace the modified database with the original one
13) you're done