fastboot - platform/system/core - Git at Google

Host:    "getvar:version"        request version variable

Client:  "OKAY0.4"               return version "0.4"

Host:    "getvar:nonexistant"    request some undefined variable

Client:  "FAILUnknown variable"  getvar failure; see getvar details below

Host:    "download:00001234"     request to send 0x1234 bytes of data

Client:  "DATA00001234"          ready to accept data

Host:    < 0x1234 bytes >        send data

Client:  "OKAY"                  success

Host:    "flash:bootloader"      request to flash the data to the bootloader

Client:  "INFOerasing flash"     indicate status / progress
         "INFOwriting flash"
         "OKAY"                  indicate success

Host:    "powerdown"             send a command

Client:  "FAILunknown command"   indicate failure