
90
Firmware Upgrade Using Micro-SD Card
1.
Download “update.zip” from supporting site.
2.
Insert a micro-SD card into a PC.
3.
Copy “update.zip” to the root directory of the micro-SD card.
4.
Make sure the target device is power on with a fully charged battery.
5.
Insert the micro-SD card into the card slot of the target device.
6.
Tap to go to Settings->About phone and tap System update.
7.
Tap Update OEM software
8.
Tap Install
Summary of Contents for U670C
Page 1: ...U670C User Manual...
Page 103: ...103 Warranty...