estoy intentando ponerle TWRP ya desbloquee el gestor de arranque pero al instalar el TWRP me salta un error en el cmd

joeltorres:~/Desktop/platform-tools_r33.0.0-windows [By Tutos JB] (1)/platform-tools$ sud fastboot devices
bash: sud: orden no encontrada
joeltorres:~/Desktop/platform-tools_r33.0.0-windows [By Tutos JB] (1)/platform-tools$ sudo fastboot devices
[sudo] password for joeltorres:
ZY326JCTD8 fastboot
joeltorres:~/Desktop/platform-tools_r33.0.0-windows [By Tutos JB] (1)/platform-tools$ sudo fastboot flash boot twrp.img
target reported max download size of 535822336 bytes
sending 'boot_a' (44538 KB)...
OKAY [ 1.539s]
writing 'boot_a'...
FAILED (status read failed (No such device))
finished. total time: 6.559s

me sale el error "(status read failed (No such device))" soy de linux alguien me puede ayudar?