Is it possible to mod the 6" personal ereader wwh8 eink screen with Linux OS? I tried to update the firmware using the internal function and said did not find SW on SD card. How can I put one of the firmwares for the 7" white one? I tried using the vol (also > button) with power but it did not go into update mode. Just turned on. The wwh7 model has Android but got this wwh8 from sears. Is it even possible to hack or just return back to store? TIA.