Due to a change in the audio IC, the audio drivers and BIOS cannot be shared between the two models and must be differentiated as follows:

M5 Ultra:
Driver package: M5Ultra_Drivers
BIOS flash package: M5Ultra_BIOS1.06_EC1.07_20260509
OS image package: OS_ACB19D_Barcelo_7730U_GMK_M5Ultra_Win11Pro_64_25H2_UP7840_US(Default)CNTWFRESKRJPDEILRUPTSAITNL_RZ616_Realtek8125_260319z


M5 Ultra-R:
Driver package: M5Ultra-R_Drivers
BIOS flash package: M5Ultra-R_BIOS2.01_EC2.01_20260701
OS image package: OS_ACB19D_BarceloR_GMK_Win11Pro_64_25H2_up7840_US(Default)CNTWFRESKRJPDEILRUPTSAITNL_RZ616_Realtek8125_260410y