You said you were able to fix bluetooth via DSDT. Is this true?
If I remember correctly bluetooth worked, but was not very reliable, we had to keep cycling that and wifi to make it work using the "f2" button i think it is on the dell laptop.
I also have an old wifi kext that i'm sure used to make it work without DSDT mod..
would need testign though, as im on a probook and dont have my friends laptop here