# -> file not found

mklittlefs -c data           \
           -s 0x9000        \
           -b 4096          \
           -p 256           \
           littlefs.bin


esptool.py --port /dev/ttyUSB0 \
           --baud 115200 \
           write_flash 0x71000 littlefs.bin

# pio -->

"mklittlefs" -c data -p 256 -b 4096 -s 262144 .pio/build/esp01_1m/littlefs.bin

 esptool.py --before no_reset \
            --after soft_reset \
            --chip esp8266 \
            --port "/dev/ttyUSB0" \
            --baud 115200 \
            write_flash 765952 .pio/build/esp01_1m/littlefs.bin