M550 INPUT_SSID = Get/Set SSID

M551 INPUT_PASSWORD = Get/Set Password

M552 = Display IP address

M555 P1 = Reset wifi interface

M556 = Display network status

M560 = Update firmware using update.bin in microSD card

M561 P1 = Change thermistor type

M562 (M)XYZE = Invert or mirror axis

M563 S6 = High speed option for web download

M564 address_without_http:// = HTTP Download

M565 = Print cached file cache.gc

M566 new_file_name = Rename cached file