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iii. After the upgrade, you need to restore the information that you have
backed up before the upgrade.
2 Before an Upgrade
1. Prepare the tools required for upgrading the software of your mobile phone
through an SD card.
Upgrade package
i. Enter the following URL in the address bar of a browser:
http://www.ztedevice.com/support/index.html. ZTE’s official website
for smartphone service support is displayed.
ii. Download the upgrade package named update.zip corresponding to
your mobile phone model. To check your mobile phone model, tap
Settings > About phone > Model number. If the file downloaded is
not named update.zip, decompress the file and obtain the update.zip
file.
iii. Move upda te.zip (the file name must be update.zip) to the root
directory of the SD card, see Figure 2-1.
Figure 2-1 update.zip
Note:
Verify that the update.zip file in the root directory of the SD card is applicable to
your mobile phone model. Do not modify the name or extension of this file.
Micro SD card
It is recommended that the Micro SD card be larger than 1 GB.
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