The alien battleship’s mainframe had been so completely destroyed that even after 4 whole months of scouring the junkyard, they couldn’t find a relatively intact piece. Regardless, by pooling together the many pieces that they did find, the Hope had gotten much valuable information, like space knowledge, from them.
A single piece, though, proved to be an isolated case. It had grown a nascent AI and couldn’t be cracked using conventional method. There was suggestion of using forceful hacking, but that was quickly shot down for fear of damaging the information locked within.
Therefore, to procure this information, a task force had been set up to unlock it. It wasn't until the Hope’s own mainframe had been updated with supermagnetic chips that the piece could be cracked.