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4.
After your mobile phone reboots, the upgrade screen is directly displayed.
The upgrade automatically starts, see Figure 3-6.
5.
After the upgrade is completed, your mobile phone reboots again. After
your mobile phone is started, it is recommended to tap Settings > Backup
& reset > Factory data reset to restore your mobile phone to factory
defaults to improve mobile phone stability. The mobile phone can then be
used.
3.2
Forced Upgrade
1.
Verify that your mobile phone is powered off. Press and hold the Power
key, and then press and hold the upper Volume key, until the screen is lit,
then the mobile phone enters the recovery menu. In this mode, the
Volume key allows you to select an option, and the Power key allows you
to confirm an operation, see Figure 3-7.
<以上所有信息均为中兴通讯股份有限公司所有，不得外传>
All Rights reserved, No Spreading abroad without Permission of ZTE
Figure 3-6 Upgrading the Software
秘密 Confidential▲
第 9 页
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