2021 when it was discovered that an anti-cheat measure in PlayStation Network had the potential to render games unplayable on the PlayStation 3, PlayStation 4 and PlayStation 5 due to their reliance on maintaining a mandatory accurate date and time setting, whether through connection to the network or a CMOS battery, in a phenomenon known as the C-bomb. Following outcry over the issue, Sony released a firmware update for the PS4 in late September 2021 that resolved the problem for this console, and did the same for the PS5 over a month later. References External links Sony timer Ethically disputed business practices Japanese urban legends Obsolescence Product expiration Sony Urban legends Conspiracy theories in Asia