You can update via USB flash drive. This works for both upgrades and downgrades (downgrades require a forced IMG flash).
Only downgrade if:
: Ensuring apps like Netflix or Disney+ stay compatible with the latest streaming protocols. Firmware TCL 50EP660
Based on user reviews and reports, here are some key features and observations about the firmware: You can update via USB flash drive
For community-driven updates and discussions on compatible apps, you might follow tech-focused social pages like Videosec & Ledsec on Facebook . Firmware TCL 50EP660
Check your specific TV for latest version – TCL does not maintain public changelogs consistently.