If you are replacing a TPMT5522PC821 board, here are the critical firmware-related steps you must take:
Updated certificates for streaming services like Netflix or YouTube. Poly Documentation Library 3. Installation Instructions (USB Method) tpmt5522pc821 firmware
sudo dmidecode -t firmware | grep -i tpmt If you are replacing a TPMT5522PC821 board, here
If your version reads something like TPMT5522PC819 or TPMT5521PC821 , you have an older or variant build. The target pc821 is a specific patch set. tpmt5522pc821 firmware