Ouch paying for softmods is bad. You were very ripped off, as everything you paid for is available free of charge, most of it probably on this site. Get your money back if you can.
1101 is a read error, means you either had a bad burn or you have the d3-2 chip which prevents the console's drive from reading backup discs. If that's the case you'll only be able to load from usb. You can check your serial number against the list here to see if your drive is chipped.
Dvd+R media also has a track record of inconsistent read errors. Your verbatims will have the highest success rate.