C02Z32RTLVDQ:flame-factory-2021.03.19.14 i855307$ ./flash-all.sh 
ERROR: could not clear output pipe; result e00002eb, ignoring....
ERROR: usb_write failed with status e00002c0
ERROR: usb_write failed with status e00002c0
ERROR: usb_write failed with status e00002c0
Sending 'bootloader' (8833 KB)                     ERROR: usb_write failed with status e00002c0
FAILED (Write to device failed (No such file or directory))
fastboot: error: Command failed