Found the firmware. At the link below, type in your model number (B2N4 for my X80 Power) and submit. You’ll need to install Baidu and register for a Baidu account to download the files. http://www.teclast.com/tools/pad/pad.php?t=p
yes i have found here http://pan.baidu.com/s/1jIJeAKQ , but now the problem is, it is hard to download in Baidu… can anyone help us to download it and upload in Google Drive…