on the minimally secure ones (unlike the author's tablet that didn't even erase his data after 'oem unlock') you cannot make root permanent after dirty c0w. un

on the minimally secure ones (unlike the author's tablet that didn't even erase his data after 'oem unlock') you cannot make root permanent after dirty c0w. unless you can pad your new image to get a hash colision and make the bootloading chain thinks it is a signed image. good luck with that.