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秘密 Confidential▲
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SD Upgrade
Preparation:
Copy “update.zip” to root directory in SD card;
Notes:
■ The user’s data in the handset will be deleted after SD upgrade, please
backup it in advance
；
■ Please ensure the battery power is more over 50% during the update
step.
Upgrade step:
There are two upgrade methods: normal upgrade and mandatory upgrade.
If the phone cannot be started properly, for example, the phone cannot be
started, or the phone does not enter standby state, perform a forced upgrade.
If the phone can be started properly and the Settings menu can be selected,
perform a normal upgrade.
1.Normal upgrade
（
1
）
Switch on the terminal, and select File Manager>SD Card, verify that
the update.zip file in the root directory of the SD card is proper, see Figure 1-1;
Figure1-1
（2）
Tap and select Settings >System Updates, see Figure 1-2;
秘密 Confidential▲
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Figure1-2
(3) Select “INSTALL”,then it will start update, see Figure 1-3;
Figure 1-3
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(4) Wait until the phone reboot or touch “Install” again to reboot the phone
immediately, see Figure 1-4;
Figure 1-4
2.Mandatory upgrade
（1）
Enter recovery mode by pressing Volume Up + Power key at the same
time , and it will show the recovery menu,see Figure 2-1;
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Figure 2-1
（2）
Click Volume Down key to choose item “Apply update from SD card”,
then click Power key to confirm,see Figure 2-2;
Figure 2-2
（3）
Select the update.zip file, then click Power key to confirm, see Figure
2-3;
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以上所有信息均为中兴通讯股份有限公司所有，不得外传
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Figure 2-3
（4）
Wait until update is over,see Figure 2-4;
Figure 2-4
（5）
Choose item “reboot system now”, click Power key to confirm
；
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