IMPORTANT! - please read these instructions carefully before updating your device 
Dopod C720W 2577 (ver 10.707.1.3) 

1. Download the folder “2577_10.707.1.3” and then rename it to “2577" , unzip it and copy to Micro SD card 
2. Turn off the C720W and then put in the Micro SD-card into the C720W. 
3. Turn on C720W and then it will install automatically and restart the C720W.