1.Pls.download the decompressed file and then copy to the TF card root directory
2.Press the menu key and then press power key and it will upgrade automatically 
3.Complete the upgrading,Pls.turn off the power and re-start it 


1:把下载的压缩包解压文件拷贝的TF卡的根目录
2：先按住MENU键，在按住POWER键，会自动升级
3：升级完毕，再断电，重新开机，即可。