I don’t know if you tried the custom command?
Maybe something like main.input=tv
name: selector
description: Input Selector Command
values:
'00':
name: video1
description: sets VIDEO1, VCR/DVR, STB/DVR
'01':
name: video2
description: sets VIDEO2, CBL/SAT
'02':
name: video3
description: sets VIDEO3, GAME/TV, GAME, GAME1
'03':
name: video4
description: sets VIDEO4, AUX1(AUX)
'04':
name: video5
description: sets VIDEO5, AUX2, GAME2
'05':
name: video6
description: sets VIDEO6, PC
'06':
name: video7
description: sets VIDEO7
'07':
name: '07'
description: Hidden1 EXTRA1
08:
name: 08
description: Hidden2 EXTRA2
09:
name: 09
description: Hidden3 EXTRA3
'10':
name: dvd
description: sets DVD, BD/DVD
'11':
name: strm-box
description: sets STRM BOX
'12':
name: tv
description: sets TV
'20':
name: tape-1
description: sets TAPE(1), TV/TAPE
'21':
name: tape2
description: sets TAPE2
'22':
name: phono
description: sets PHONO
'23':
name: cd
description: sets CD, TV/CD
'24':
name: fm
description: sets FM
'25':
name: am
description: sets AM
"\u201C26\u201D":
name: tuner
description: sets TUNER
'27':
name: [music-server, p4s, dlna]
description: sets MUSIC SERVER, P4S, DLNA
'28':
name: [internet-radio, iradio-favorite]
description: sets INTERNET RADIO, iRadio Favorite
'29':
name: usb
description: sets USB/USB(Front)
2A:
name: usb
description: sets USB(Rear)
2B:
name: network
description: sets NETWORK, NET
2C:
name: usb
description: sets USB(toggle)
2D:
name: aiplay
description: sets Aiplay
2E:
name: bluetooth
description: sets Bluetooth
'40':
name: universal-port
description: sets Universal PORT
'30':
name: multi-ch
description: sets MULTI CH
'31':
name: xm
description: sets XM
'32':
name: sirius
description: sets SIRIUS
'33':
name: dab
description: 'sets DAB '
'55':
name: hdmi-5
description: sets HDMI 5
'56':
name: hdmi-6
description: sets HDMI 6
'57':
name: hdmi-7
description: sets HDMI 7
UP:
name: up
description: sets Selector Position
DOWN:
name: down
description: sets Selector Position
QSTN:
name: query
description: gets The Selector Position
Source
From the Onkyo app topic: