.. _9 How to upgrade system via SD card:

9 How to upgrade system via SD card
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**Applicable Devices**: G2 4K series/ Neo2 series

There are two methods:

- **Method 1 – Upgrade via SD card :**

**1.** Create the "dload" folder in the SD root directory;

**2.** Copy the ROM package to the "dload" folder of the SD card (do not decompress the zip package);

**3.** Older PUI 4.0.1: In "My Applications" → "System Update", click "Offline Upgrade".

　Later than PUI 4.0.1: In the bottom right corner of Settings, click "Check PUI Update" → "Offline Upgrade".

.. image:: _static/2.12.png

- **Method 2 – Upgrade via Recovery Mode:**

**1.** Copy the ROM package to root folder of the SD card (do not decompress the zip package).

**2.** Enter the Recovery mode (refer Q6 step a, b, c).

**3.** Select "Apply update from SD card", and confirm.

**4.** Select the ROM package previously copying the SD card. Installation will take 3-5 minutes. No operation during this period.

**5.** Select "Wipe data/factory reset to” to erase existing data.

**Notes**: 

**1.** One SD Card in the FAT32 format (the SD card memory should be higher than 2G, to the maximum of 256G);

**2.** The remaining battery should be more than 40% during upgrading and the upgrading process lasts for 3 to 5 minutes.

**3.** System can be upgraded only from a low version to a high version.test.