Stuck FastBoot Mode

Can I change the Boot Slot from Fastboot with a command? fastboot change slot slot; don't forget to disable AutoReboot Start flashing the recovery 6 To change 7 Allow system modifications by fastboot getvar currentslot I tried the fastboot update on windows on my thor device and am getting this error: Setting current slot to 'a' OKAY Finished

fastboot change slot From there you can run fastboot getvar current-slot to see which slot you are on And you can change slots using fastboot --set-active=the slot