3. Recovery Mode

The EM3568 supports upgrade firmware through recovery mode. Insert the SD upgrade card to the board and power on, the device will enter recovery mode.

Note

The upgrade process must be restarted to enter the recovery mode, rather than upgraded directly in the Normal system.

Please format the SD card and make sure there is only one partition before make upgrade card, otherwise it may cause fail to upgrade.

3.1 Format SD Card

❶ If the SD card has only one partition, just format it as FAT32 in Windows.

❷ If the SD card has multiple partitions, it needs to clear all partitions, and then create a new partition.

Warning

Select the SD card to be formatted with caution, otherwise will cause system crash issues.

Format SD Card in CMD — Create partition in CMD

3.2 Make SD Upgrade Card

❶ Unzip SDDiskTool.zip on Windows.

❷ Open SDDiskTool\SD_Firmware_Tool.exe.

❸ Make SD upgrade card as follow.

Step	Describe
1	Select a SD card from the drop-down list
2	Check Upgrade Firmware
3	Click Firmware and select `update.img`
4	Click Create to start creation.