For some reason, TILP stopped working with my Nspire's 84+ mode, possible because I downgraded to 1.1.
So, I installed TI-Connect under Windows, only to find that TI-Connect can no longer send files to my Nspire, either, because the USB Descriptors are screwy and Windows thinks the Nspire's 84 mode is actually an 89 Titanium.
Does anyone have a workaround for this, other than reverting to a newer OS?