Sony officially ceased major firmware updates for the W800C series several years post-release. The final official firmware versions primarily focused on security patches and stability improvements rather than feature additions. As the hardware specifications (specifically RAM and flash storage) became obsolete for modern application requirements, further Android version upgrades (e.g., Nougat or Oreo) were not provisioned.
| Version | Android | Build Date | Key Changes / Problems | |---------|---------|------------|------------------------| | PKG3.905.0116NA | 5.1.1 | 2015-08 | Launch firmware – unstable Wi-Fi | | PKG3.907.0122NA | 5.1.1 | 2015-12 | HDCP 2.2 fixes for Netflix 4K (though TV is 1080p – HDMI handshake fix) | | PKG3.909.0132NA | 5.1.1 | 2016-03 | Improved USB HDD recording | | PKG3.915.0146NA | 7.0 | 2016-11 | Major OS upgrade to Nougat – new UI, but introduced memory leak | | PKG3.921.0160NA | 7.0 | 2017-07 | Security patches, memory leak partially mitigated | | PKG3.928.0190NA | 7.0 | 2018-05 | Final stable – still has slowdown over time | | PKG3.940.0240NA | 7.0 | 2019-02 | Last ever release – fixes KRACK Wi-Fi, but storage bug remains |
The Sony KDL-43W800C is a 43-inch Full HD television belonging to the W800C series. Released during the 2015 fiscal year, this model represents a transitional period in consumer electronics where Smart TV functionalities moved from walled-garden proprietary software to open, app-centric ecosystems. The firmware of the W800C is not merely control software for the panel hardware; it is a complete Android operating system environment, dictating the user interface, application compatibility, and peripheral connectivity.
As of late 2018, Sony ceased firmware development for the 43W800C. The final release, PKG6.407.0138, carries a date code of October 2017. firmware sony 43w800c
The implications of frozen firmware:
As of the latest release (check Sony’s official portal), the most recent stable firmware for the Sony 43W800C is **PKG6.8280.**xx (the last two digits vary by region). Sony periodically releases updates, so it’s essential to verify the exact version number for your region (USA, Europe, Asia, etc.).
You can find the official firmware page by searching Sony’s support site for “KDL-43W800C software update.” Always download firmware directly from Sony – never from third-party sites. Sony officially ceased major firmware updates for the
If your TV fails to update over the internet, or you have no connection, use a USB drive.
What you need:
Step-by-step USB installation:
Important: If the TV does not recognize the USB, try a different port, reformat the drive to FAT32, or redownload the firmware.
The 43W800C has a notorious vulnerability in its stock firmware: CVE-2017-0576 (a privilege escalation within the Mediatek command queue). This allowed developers to root the TV using an exploit called "Mtkhack."
Before updating, identify which firmware your TV is running: Step-by-step USB installation:
If it shows a version like PKG6.7210.xxxx or lower, you are several updates behind.