This presentation gives an updated RAS Software architecture on Arm64 base on RAS extension, SDEI, APEI, UEFI PI-MM. First of all, give a general introduction of all the software components of the Arm64 RAS architecture, then focus on the current status(upstream or development) of APEI protocol and CperLib development, and the error record mechanism for BERT in firmware. At the end, we will discuss the next step of the RAS development.