Patching XBOX 360 iso for use on an actual XBOX360

Hello, I wanted to download and burn a copy of Portal 2 for my XBOX 360 Slim (LT+3.0 modded), but after patching the iso with abgx360 (without it it won't boot) when I'm trying to burn the file via IMGburn it gets stuck on "Writing LeadIn" (I also tried to burn it on GNU/Linux via growisofs, but it does nothing and then crashes with "
:-( unable to WRITE@LBA=10h: Input/output error
:-( write failed: Input/output error
")
Are there any solutions to this problem? Am I doing something wrong? (Sorry if I have made any mistakes in this message, English is not my native language)