The last option (20190916)
Same Problems
tvheadend htsp client the dependency on kodi.binary.global.gui version
Even though it was not possible to test Driver TBS, Not even a tuner was detected on Tvheadend. (tests done with 3 drivers)
Code
dvb-usb: found a 'TBS 5520se USB2.0' in cold state, will try to load a firmware
[ 13.388144] usb 1-1.4.1: Direct firmware load for dvb-usb-tbsqbox-id5521.fw failed with error -2
[ 13.388150] dvb-usb: did not find the firmware file 'dvb-usb-tbsqbox-id5521.fw' (status -2). You can use <kernel_dir>/scripts/get_dvb_firmware to get the firmware
dvb-firmware/dvb-usb-tbsqbox-id5521.fw at master · CoreELEC/dvb-firmware · GitHub