If the network update is not finding a new version, you can flash it manually.
Firmware is software that is embedded in a hardware device, in this case, your TCL U60P6046 TV. It controls the TV's functionality, features, and performance. firmware tcl u60p6046 link
Because TCL firmware is region-specific and tied to "Project IDs," there is no single universal download link. You can find the correct files through these primary channels: If the network update is not finding a
for related models like the U55P6046, which may share similar chassis software. Telegram & Reddit : Users on Because TCL firmware is region-specific and tied to
Finding the correct firmware link for the TCL U60P6046 requires matching the file to your specific TV chassis. This model typically runs on the Android TV 6.0 Marshmallow platform and belongs to the P60 Series. Official Firmware Sources
Use this if your TV cannot access the network or you need to flash a specific version. How to update the software on an Android TV - TCL Support