: If the picture is upside down, enter the Factory Menu , navigate to Panel Setting , and toggle the Mirror or Reverse option [4, 6].
Navigate to "Panel Settings" to find the Mirror/Flip option.
The standby indicator light should begin blinking rapidly, indicating the update is in progress.
There are two ways to update the TPMT5522PC821/EAP225:
If your version reads something like TPMT5522PC819 or TPMT5521PC821 , you have an older or variant build. The target pc821 is a specific patch set.