fis read {-b mem_address} {-l length} {-f flash_address}
This command is used to read data from flash to memory. This command is only present if a flash device does not support direct random access (for example an SPI NOR flash).
Read an area of flash into memory
RedBoot> fis read -b 0x0606f000 -l 0x1000 -f 0x00020000