Sony WH-CH720N Firmware Update to Version 1.1.2

Sony has released a firmware update for the WH-CH720N. It addresses one issue with the iPhone and the security vulnerabilities would with Airoha/Mediatek chipsets. It is good to see Sony will be updating at least some of their mid level models, with perhaps further down the road the rest of the lineup.

Benefits and Improvements

• Improves an issue where ringtones may not be audible when connected to an iPhone
  Note: If you have encountered this issue, it can be resolved by either initializing the headset or using them to make a call after the update.
• Enhances system software security features 

The update should be rolling out now, maybe not all regions at once, as Sony does stagger their rollouts for firmware updates.