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How to upgrade letv eui3.0
The operation steps of upgrading LETV eui3.0 are as follows:

1, enter the setting selection system.

2. Select System Upgrade.

3. Select Online Update.

4. Local upgrade: enter the download page of LeTV EUI, download the upgrade rom corresponding to the model and save it in USB flash drive 02.

5. Enter Settings > System > System Upgrade > Select Local Upgrade in the same way.