Y520U Micro SD Upgrade Firmware Guidance
Y520U Micro SD Upgrade Firmware Guidance
Y520U Micro SD Upgrade Firmware Guidance
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Content
5 Notice .......................................................................... 9
1 Purpose
This instruction is used for guiding service staff to upgrade firmware of handset with Micro SD
card.
2 Scope of application
This instruction is apply to Y520U handset, and used for the service staff and related persons to
upgrade handset software version.
3 Tools list
OS:Win98、Win2K、WinXP、Win7
4 Firmware Upgrade
Notice: In case the “update.zip” file is not from HW official website, probably the firmware
upgrading will fail and result in handset power on failure.
Select “confirm” to enter SD upgrade interface, then click “upgrade” ,handset will power off
automatically to start upgrading process.
The whole upgrading procedure will take around 2 minutes, please ensure battery power is enough
and without any operation during software upgrading. mobile phone will restart automatically
after upgrading procedure finished 30s.
Remark: after software upgraded, please enter setting interface to check the software version is
correct.
2. Select “recovery mode” with volume up key , confirm it with volume down key, then enter
4. Select “apply update from sdcard” with volume download key, confirm it with Home key, then
enter the SD card upgrading interface:
Remark: if you can’t find the “update.zip” file in the list, please select” reboot system now” with
volume keyclick Home key to confirm ,then restart device, and copy the “update.zip” file into
SD card root directory.
5. Select “update.zip” with volume down key, then click Home key to confirm, mobile phone will
start the firmware updating procedure, the below picture is for your reference:
6. The “Install from sdcard complete” prompt will appear and handset will restart automatically
after software updating finished.
Remark: after software upgraded, please enter setting interface to check the software version is
correct.
5 Notice
1. Don’t take out SD card and battery during software upgrading.( please ensure battery power
is enough)
2. This firmware update method is not allowed to upgrade firmware between different
customized version, not allowed to upgrade firmware from high version to lower version, not
allowed to upgrade firmware between non-consecutive version.