As much as I saw in the update, there is a new radio image for the onboard baseband. I think this should switch it off. An older radio image is not avaliable, so there should be no other chance to unbrick it, except plugging in a mdm9600 mini pci card and flashing 3.2.2
to check if this is so, go into a terminal or adb shell, gain root and do a lsusb
if there is a device with the id 05c6:9008, your radio is in diagnostics mode. that means it's "switched off"
regards
ghost
to check if this is so, go into a terminal or adb shell, gain root and do a lsusb
if there is a device with the id 05c6:9008, your radio is in diagnostics mode. that means it's "switched off"
regards
ghost