Won't stay in Download mode

[Djcall11]

so i wanted to update to Android pie so i was just going to flash the stock firmware (7.1.1) and go from there but whenever i execute the command it just shows the black and white razer logo and powered by android so im lost

 

[Djcall11]

it shows in fastboot devices but one a use a command it exits download mode

 

[Djcall11]

the only command that works is fastboot reboot-bootloader