Inside STM32Cube/Repository
:
git clone --recursive https://github.com/STMicroelectronics/STM32CubeH7.git
git checkout v1.12.1
package.xml
and note:
<PackDescription Release="FW.H7.1.12.0" Patch="FW.H7.1.12.1">
STM32Cube_{VERSION}
.
So for this example it would be STM32Cube_FW_H7_V1.12.1
.
Now the firmware package should be listed in the CubeMX software package manager.