$ heimdall flash --RECOVERY twrp-3.4.0-2-beyond2lte.img --no-reboot
Heimdall v1.4.2
Copyright (c) 2010-2017 Benjamin Dobell, Glass Echidna This software is provided free of charge. Copying and redistribution is
encouraged.
If you appreciate this software and you would like to support future
development please consider donating:
Initialising connection...
Detecting device...
Claiming interface...
Setting up interface...
Initialising protocol...
Protocol initialisation successful.
Beginning session...
Some devices may take up to 2 minutes to respond.
Please be patient!
Session begun.
Downloading device's PIT file...
PIT file download successful.
Uploading RECOVERY
100%
RECOVERY upload successful
Ending session...
ERROR: Failed to receive session end confirmation!
Releasing device interface...