Just got an update on my TV (PUS7303):

Software history – Philips 2K18 73x3/7503/7803/8303/8503/OLED803/OLED903 ranges

TPM171E _ 105.001.002.013 – Date: 2018/08/02

• Fix for RU Tricolor issues
• Fix for USB playback incorrect ratio for 21 by 9
• Fix for sound drops on USB playback of 4K movies
• Fix for unwanted messages staying on the screen eg. ‘No signal’
• Fix for cracking sound when stopping YouTube playback
• Improvements for stability o No picture, no sound after startup from standby o Stuck in Philips logo screen after startup from standby o OLED TV starting with screensaver
• Improvement for Germany Tele Columbus installation
• Improvement for UPC channel installation
• Improvement for power consumption
• Update of PQ avoiding OLED burn-in
• Addition of Google security patch