I've used Sony's app named "Backup & restore" to make a copy of everything from my phone. Then I wanted to copy the backup to my PC and because I couldn't install a file manager or any other app that could have helped me with copying the backup (Google Play wasn't working and I was unable to install any file manager using "adb install"), I copied it using "adb pull". Which seems like it was a big mistake. Now all the folders (like "com.sonyericsson.android.socialphonebook") turned into files that I cannot open with any app (tried 7zip, PowerISO and other similar apps). Is there a way I can recover the backup? I'm mostly concerned about contacts and messages.