What does that mean I have rollback or not? (fastboot getvar anti)

[Manuel Leon]

What does that mean I have rollback or not?
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot devices
601bce53 fastboot
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot getvar anti
getvar:anti FAILED (remote: GetVar Variable Not found)
finished. total time: 0.003s
C:\Program Files (x86)\Minimal ADB and Fastboot>