Firmware split into 10 or more parts is typically found on enthusiast forums or unofficial repositories like or sites like XDA Developers . If you must use these unofficial sources:
Navigate to Settings > More Settings > Device Preferences > About > System Update > Network Update . Download RTD2841 TCL UnionTV Firmware part10 rar
What is the of your software (e.g., V8-R41KT01-VXXX)? Firmware split into 10 or more parts is