Asus AiGuru S2 - Manual (Page 35)

2-13 AiGuru S2 Wireless Skype Phone
During the firmware updating, turning the handset off or removing the
USB cable will seriously damage the handset.
Firmware upgrade
Follow the instructions below for firmware
updating.
Update the firmware to obtain the best performance and stablity.
1. Connect your handset to your PC through the providing USB cable and click
the Firmware Upgrade button to apply the latest firmware for your handset.
2. The warning message appears Do not power off.
3. After the process is complete, follow the instruction to reboot the handset.