Upgrade steps:

1. Format the TF card as FAT32, and copy the update.zip file to the root directory of the TF card.

2. Insert the TF card into the product, and the system will automatically remind you whether to update and click update, The box will automatically enter the upgrade.

Note: the upgrade time lasts five minutes. Do not pull out the box halfway.

3. After you see the product interface again, the system will automatically install new applications.