I've got good news and bad news. The good news is that I've figured out what sort of encryption they used. The bad news is that I won't be able to get through it unless they made a mistake… and even then it might take years.
The other good news is that it's a Midgard system and we might be able to get it decrypted with your help… assuming you're a fair hand at hacking and infiltration.
"How?"
Ah, yeah, it's a little complicated if you haven't used it before. The original cipher was intended to remotely brick stolen or compromised devices, so they're not really focused on usability.
Anyway, if it still works, you need a connection to the corporate systems to get the one-time key to decrypt it. To get the connection, you'd need to be admin on one of the remote facilities servers.
You'll need to have the encrypted PDA connected for at least a couple minutes, because the key is huge… as large as the entire contents of the PDA, actually. Sorry for the encryption lesson.
Anyway, the big hurdles should be getting admin access to the remote server and standing there waiting for the download. Unless you're mirroring the access of the same person who encrypted it, it'll trip some alarms at corporate.
In the beginning, men were mortal.