UMX U673C - Firmware Upgrade Procedure; Preparing for Firmware Update; Performing Firmware Update via microSD

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Power button
ends call
When the icon is on, you can press power on/off
icon ends call.
Auto-rotate
screen
Let the phone auto rotate .
Speak
passwords
If you set the passwords, you can speak password
unlock the phone.
Touch &hold
delay
Set the time of touch &hold short, medium, long.
Enhance web
accessibility
If you install scripts from Google that make their
web content more accessible.
About phone
System updates
You can upgrade your system to up-to-date
version.
Status
Information about your Phone number,
signal, etc.
Legal information
Legal information about Open source
licenses and Google legal.
Model number
Check the Model number.
Android version
Check the android version.
Baseband version
Check the baseband version.
Kernel version
Check the Kernel version.
Software version
The phone’s build number.
Hardware
version
You can check hardware version.
Firmware Upgrade Using
microSD Card
1. Download “update.zip” from supporting site.
2. Insert a microSD card into a PC.
3. Copy “update.zip” to the root directory of the microSD
card.
4. Make sure the target device is power on with a fully
charged battery.
5. Insert the microSD card into the card slot of the target
device.
6. Tap to go to Settings>About phone and tap System
update.
7. Choose the software from the SD card .