Restore using recovery mode. If you've never synced with iTunes or set up Find My iPhone in iCloud, you'll need to use recovery mode to restore your device. This will erase the device and its passcode. 1  Connect your iOS device to your computer and open iTunes.
So if you have a .deb file: 1  You can install it using sudo dpkg -i /path/to/deb/file followed by sudo apt-get install -f. 2  You can install it using apt-get install package_name. 3  Install gdebi and open your .deb file using it (Right-click -> Open with).
How to install it. First youâll download the WAD files for Doom or Doom II along with the one for Brutal Doom and you save them both to the same folder. If you donât have the original Doom files, use the FreeDoom ones, although youâll be playing on that gameâs maps instead of the original ones. Then you download and install Zandronum.