you can reinstall the os
the newest one v4.0 , support chinese and english
http://www.smartdevices.com.cn/files/SmartQ7-v4.0.rar
sdupdatetool is :
http://www.smartdevices.com.cn/files...teToolV1.1.rar
here is guide of how to install os ,backup before reinstall os.
http://www.jiongtang.com/blog/html/s...d-smartq7.html