9
3. When fail to upgrade the
firmware, start Upgrade Mode
manually
The steps of starting S1200 Upgrade Mode manually are below:
1. Please turn off S1200, or shutdown the device by removing the battery. If
you remove the battery out to shutdown the device, please remember to
install the battery back into the device before upgrade the firmware.
2. Press and hold Call Key and End Key together, and then, press and hold
Power Key. At this time, S1200 will get into Upgrade Mode.
3. In Upgrade Mode, S1200 will be ready for upgrading, once the Led light
turns green.
[Note:] If the Led light does not turn green, or the boot screen is displayed,
it means that the manual settings are failed. In order to get into Upgrade
Mode, you need to do all steps (1~3) again.