You will see a string like: TPM191E_R.101.001.002.212 or similar. That is your firmware. The middle numbers indicate build date and revision.
This voids your warranty if done incorrectly. Only attempt if the TV is completely unresponsive. philips tv firmware
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Philips TV firmware can be updated three ways: OTA (Over the Air), USB, or forced via service menu. Here is the breakdown. You will see a string like: TPM191E_R
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