Function flash_firmware 

pub fn flash_firmware(
    ctx: &Ctx,
    image: &str,
    backup: &str,
    commit: bool,
    blocks: Range<u8>,
    index: u16,
    wait: u64,
    p: &mut dyn Progress,
) -> Result<()>

Install an FPGA bitstream into the primary firmware bank.

Only the primary is written; the golden backup is left alone so the card retains an in-hardware fallback. A local dump of the current primary is required as well, so the previous image can be put back.

blocks limits the write to part of the bank, so a partially-programmed image can be repaired without disturbing what is already correct. image is a manifest name or a path (crate::firmware).