While HPE pushes updates for security and stability, many users find specific older versions (or patched versions based on older kernels) superior for these reasons:
Versions 2.70 and 2.82 do not contain these microcode mitigations. The iLO processor runs at full speed. The remote KVM feels local again. For homelabs or isolated production networks, this performance boost is life-changing. downgrade ilo 4 firmware better