Exactly a month ago Apple released a software update version 2C54. It turns out that it did more harm than good. User reviews have appeared on the network suggesting that the update will negatively affect the sound quality.
Apple fans asked RTINGS.com for a technical rating. Retesting AirPods Pro with 2C54 firmware dispelled all doubts.
Tests have shown that after upgrading to the 2C45 firmware, the insulation performance decreased, mainly in the bass range. This means that when turned on ANC (active noise reduction) Headphones are not as good at suppressing specific sounds as they were before this update. The biggest problems were noted in the case of low tones, i.e. noise emitted by car or aircraft engines.
Apple has already rolled back the unlucky update so the company is aware of the problems. Users who have already updated their headphones to the 2C54 version have nothing else to do but wait for the next update.