The HDMI CEC bug, which prevented external devices from powering off 2016-2019 Sony TVs, has been fixed in Sony's latest firmware update.
Sony's HDMI CEC bug
Sony's roll-out of Android 9 to 2016-2019 Android TVs late last year introduced an HDMI CEC bug that prevented external devices (Apple TV, disc players etc.) from powering off the Sony TV. The bug has been widely reported by owners since late 2020.
Last week, Sony started rolling out firmware update v6.7165 to address the HDMI CEC issue. The firmware fixes the issue as intended, according to multiple owner reports on Flatpanels' forums.

Sony refers to HDMI CEC as 'Bravia Sync'
The firmware is available now for 2016-2019 models (D, E, F, G generations) including popular models like Sony A1, XE90 (X900E), and XF90 (X900F).
If you are not seeing firmware v.6.7165 through the TV's built-in update function, it can be downloaded manually onto a USB stick from Sony's supports pages: UK here and US here.
Sony firmware update v6.7165
Benefits and Improvements
- Resolves an issue where the TV does not turn off when turning off HDMI devices connected via BRAVIA Sync (HDMI CEC)
- Resolves an issue where an information banner appears randomly while watching content through HDMI connected devices
- Resolves an issue where the TV can’t connect with specific wireless subwoofers
Applicable Models (Europe)
KD-55A1
KD-65A1
KD-77A1
KD-55AF8
KD-65AF8
KD-55AG8
KD-65AG8
KD-50SD8005
KDL-43WF804
KDL-43WF805
KDL-49WF804
KDL-49WF805
KD-49XD7004
KD-49XD7005
KD-55XD7004
KD-55XD7005
KD-65XD7504
KD-65XD7505
KD-43XD8005
KD-43XD8077
KD-43XD8088
KD-43XD8099
KD-49XD8005
KD-49XD8077
KD-49XD8088
KD-49XD8099
KD-55XD8005
KD-43XD8305
KD-49XD8305
KD-43XE8004
KD-43XE8005
KD-43XE8077
KD-43XE8096
KD-43XE8099
KD-43XE8396
KD-49XE8004
KD-49XE8005
KD-49XE8077
KD-49XE8088
KD-49XE8096
KD-49XE8099
KD-49XE8396
KD-55XE8096
KD-55XE8396
KD-55XE8505
KD-55XE8577
KD-55XE8588
KD-55XE8596
KD-55XE8599
KD-65XE8505
KD-65XE8577
KD-65XE8588
KD-65XE8596
KD-65XE8599
KD-75XE8596
KD-49XE9005
KD-55XE9005
KD-65XE9005
KD-75XE9005
KD-55XE9305
KD-65XE9305
KD-75XE9405
KD-43XF7596
KD-49XF7596
KD-55XF7596
KD-65XF7596
KD-43XF8096
KD-49XF8096
KD-55XF8096
KD-60XF8305
KD-70XF8305
KD-43XF8505
KD-43XF8577
KD-43XF8588
KD-43XF8596
KD-43XF8599
KD-43XF8796
KD-49XF8505
KD-49XF8577
KD-49XF8588
KD-49XF8596
KD-49XF8599
KD-49XF8796
KD-55XF8505
KD-55XF8577
KD-55XF8588
KD-55XF8596
KD-55XF8599
KD-55XF8796
KD-65XF8505
KD-65XF8577
KD-65XF8588
KD-65XF8596
KD-65XF8599
KD-65XF8796
KD-75XF8596
KD-85XF8596
KD-49XF9005
KD-55XF9005
KD-65XF9005
KD-75XF9005
KD-43XG8096
KD-43XG8196
KD-49XG8096
KD-49XG8196
KD-55XG8096
KD-55XG8196
KD-65XG8096
KD-65XG8196
KD-75XG8096
KD-43XG8305
KD-43XG8388
KD-43XG8396
KD-43XG8399
KD-49XG8305
KD-49XG8377
KD-49XG8388
KD-49XG8396
KD-49XG8399
KD-49XG9005
KD-100ZD9
KD-65ZD9
KD-75ZD9
Applicable Models (Americas)
XBR-49X700D
XBR-55X700D
XBR-65X750D
XBR-43X800D
XBR-49X800D
XBR-43X800E
XBR-49X800E
XBR-55X800E
XBR-65X850E
XBR-75X850E
XBR-49X900E
XBR-55X900E
XBR-65X900E
XBR-75X900E
XBR-55X930E
XBR-65X930E
XBR-75X940E
KD-43X750F
KD-49X750F
KD-55X750F
KD-65X750F
KD-75X780F
XBR-60X830F
XBR-70X830F
XBR-65X850F
XBR-75X850F
XBR-85X850F
XBR-49X900F
XBR-55X900F
XBR-65X900F
XBR-75X900F
XBR-85X900F
XBR-43X800G
XBR-49X800G
XBR-55X800G
XBR-65X800G
XBR-75X800G
XBR-100Z9D
XBR-65Z9D
XBR-75Z9D
XBR-55A1E
XBR-65A1E
XBR-77A1E
XBR-55A8F
XBR-65A8F
XBR-55A8G
XBR-65A8G |
FlatpanelsHD