C:\r4p\platform-tools>fastboot flash recovery C:\r4p\platform-tools\twrp.img
target reported max download size of 536870912 bytes
sending 'recovery' (28814 KB)...
OKAY [ 0.642s]
writing 'recovery'...
OKAY [ 0.384s]
finished. total time: 1.027s

これでtwrpは焼けてるってことですよね？
その後すかさず
＞fastboot　boot　recovery
と打てばよいですか？