C:\Users\me\Downloads\--(IDM_Downloads)-->fastboot flash recovery recovery.img
target reported max download size of 1824317440 bytes
sending 'recovery' (20120 KB)...
OKAY [  1.818s]
writing 'recovery'...
OKAY [  0.670s]
finished. total time: 2.498s

C:\Users\me\Downloads\--(IDM_Downloads)-->adb backup -f test3 --twrp boot data
Now unlock your device and confirm the backup operation.

C:\Users\me\Downloads\--(IDM_Downloads)-->adb restore test3
Now unlock your device and confirm the restore operation.

C:\Users\me\Downloads\--(IDM_Downloads)-->