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ZTE A2021G Upgrade Guide (Through an SD Card)

1. Cautions

The software version and pictures in this document are just for

reference only. Please use ZTE handset support website provided version

to download software.

1)Download the upgrade package.

Open http://www.ztedevice.com.cn/support and download the upgrade

package (update.zip) that matches yourphone model. Ifthe

downloaded package is not update.zip, unzip the package to obtain

update.zip.

Ensure that your micro SD card is atleast 3GB.

NotePlease refer to our current version downloadsize：.

2) Remove the SIM card, then back up thedata and APPs in your phone

before the upgrade.

3)Perform data backup.

Note:Youshould not remove the SD card during the backupprocess. To

avoid data lost,itisnot recommended to cancel the backup process.

4)Verify thatthefile intheroot directory of the SDcardupdate.zip

matches the model ofthe phone. Do not modifythefile nameand

extension name of the files in the upgrade package.

5)Verify thatyour phone hasenough (at least 40%)power. Charge the phone

if required.To avoid data lostor upgradefailure, itisnotrecommended to

upgrade your phone through an SD card when the phone is being charged.

6)You should not perform any other operation on the phone during the

upgrade process.

7)A normal upgradeshouldbe completed inminutes.If the phonedoes not5

reboot or show any response inminutes, you should perform the upgrade5

process again.If thephonecannot be started, perform aforcedupgrade. If

the forcedupgrade doesnotwork,you should contact an after-saleservice

agent for support.

2.Upgrade Description

There are twoupgrade methods: normal upgrade and forced upgrade.

Ifthephonecannot bestartedproperly,for example, the phone cannotbe

started, orthe phone does notenter standbystate,perform a forced upgrade.

If the phone can be started properly and themenu can beselected,Settings

perform a normal upgrade.

Produktspezifikationen