Uhh, it doesn't show usage?
Code:
PS D:\Android Tools\platform-tools> adb shell
# ls -l /system/bin/update-binary
-rwxr-xr-x 1 root root 2134344 1970-01-01 00:00 /system/bin/update-binary
# updatebinary
/system/bin/sh: updatebinary: inaccessible or not found
# update-binary
unexpected number of arguments: 1
# update-binary 2 1 MaxLumi4
Unable to open 'MaxLumi4': No such file or directory
failed to map package MaxLumi4
# update-binary 2 1 update.zip
Unable to open 'update.zip': No such file or directory
failed to map package update.zip
# update-binary 2 1 somefakename
Unable to open 'somefakename': No such file or directory
failed to map package somefakename