From my last post before that, grab iTouch_ENG_BAT.rar. Extract it anywhere to your computer.
After installing iSakuReal 1.7, download the latest iTouch firmware from
http://itouchds.com. Extract iTouch.eng and iT_firegame.eng to the folder that has iTouch_ENG_BAT.
After making sure that iTouch.eng and iT_firegame.eng are in the same folder as the files from iTouch_ENG_BAT.rar, run iTDSeng.bat. Ignore any errors about missing files, since we're not patching those, unless the missing files are iTouch.eng and iT_firegame.eng. If those are the missing files, then make sure that they're in the same folder as the .bat.
Once iTDSeng.bat closes, copy your newly-patched iTouch.eng and iT_firegame.eng into the iTouch folder on your memory card. If you cannot boot ROMs/homebrew, then repeat the steps, making sure that the iTouch folder on your memory card is from a new download of iSakuReal 1.7.
Sorry if that's still not clear. Tomorrow, I might
release my iSakuReal install as an unofficial version of iSakuReal 1.8. If not, it's probably because I'm working on getting it to use the latest Asian Sakura loaders.