Instructions:

1 - reboot XL-7/MP-7/P2500 holding down Home/Enter
2 - if you already have 1.17, skip to step 6
3 - using E-loader, download commandprep10.dli
4 - when asked to "Replace bootloader?" press enter
5 - when instructed, reboot XL-7/MP-7/P2500, again holding down Home/Enter
6 - using E-loader, download command118.dli
7 - follow prompts
8 - enjoy