Can I backup the emmc flash through the USB port

I think that is a very meaningful function.

and, does anybody knows,when I using “usb burning tool”, what is the format of .img file? Is it a raw data type, the mirror of the emmc flash on board.

thanks for any help.

Hello, I don’t have the answers to your questions. However eMMC can be backed up using one of balbes150’s Linux running from SD card or Flash drive, using his included script called DDBR. Backup is stored on the card and can be restored from the card.