Using the wrong file can "brick" the device. Software is model-specific—firmware for an SRT 4954 will not work on an SRT 4922 . How to Upgrade for TV3
For many Strong models, watching TV3 requires either a full software flash via USB or manually entering new BISS keys. 1. The USB Update Method (Recommended) Strong Receiver Upgrade Software To Watch Tv3
Never turn off the power during the update, as this can permanently damage the receiver. 2. Manual BISS Key Entry Using the wrong file can "brick" the device
Plug the USB into the receiver. Go to Menu > USB > Data Transfer , select your file, and press OK. select your file