Philips 56PFL9954H/12B User Manual page 200

4.5.2 With a USB memory device
In some cases, it might be necessary to update the TV
software. Start the software update on the TV. Then,
download the TV software from the Internet onto your PC.
Use a USB memory device to upload the software from
your PC to the TV.
Preparation
You need a PC with a high speed Internet connection. You
will need a USB memory device with 256 Mb free space
and make sure that the write protection is switched off.
Some USB memory devices might not work with the TV.
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