Does Nordic’s proprietary protocol support the 4M PHY layer only on the nRF54 series?

[Ziyao Zhou]

Hi

Does Nordic’s proprietary protocol support the 4M PHY layer only on the nRF54 series?

[Hung Bui]

Hi Zhou, 
I assume you are asking if nRF52 and nRF53 support 4M Phy or not ?
If it's the case then the answer is no. Currently it's only the nRF54 that support 4M Phy. And we don't have a plan to upgrade nRF52 and nRF53. 

[Ziyao Zhou]

Thank you so much!