To enter flashing mode, users often need to press a hidden "reset" button inside the AV port while connecting the power.
# Backup NAND to PC sunxi-fel read 0x20000000 0x80000000 nand_backup.bin # Backup SPI flash (if present) sunxi-fel spiflash-info sunxi-fel spiflash-read 0 0x800000 spibackup.bin