Hacking Issues trying to dump Death End ReQuest DLC

[Yhodarks]

Hi. I'm seeking help because I can't find proper information on guides about what I'm doing wrong.
I'm trying to dump the DLC of Death end ReQuest (USA version) , and for so, I borrowed a 12.50 PS4 with an extended storage (external HDD) and from the account I downloaded the game and the DLC and put on the ext HDD and connected it to my 9.00 PS4.

At this points, and after many trials, got the following results:

First attempt, games open fine on 9.00, but or DLC not loaded, or all have a white lock on them.
After some time, tried installing the DLC on the 12.50 PS4 first, so they can be opened on 9.00. But when opening the game, just got error CE-34224-5 and game not start.
Tried at least a 10 more times, getting one of those two results.

I don't know how to proceed further. I was able to dump the AC.pkg files for each DLC, but I assume they are encrypted, and no way to convert them to fPKG (and installing them as it, also make the DLC appear on white lock on a fpkg copy of the game).
If you could lend me a hand on how to proceed, I would really appreciate it.

Edit: Now every try I do just gives me CE-34224-5.