As far as we know there's no UMPK kit for the 9000kg bombs.
Even if there were one, dropping such a load would require a TU-95 bomber which isn't used in this conflict. Every glide bomb so far has been dropped by fighter aircraft whose weapon pylons support up to a maximum weight of 3000kg per pylon, dependent on the jet and particular hardpoint.
Besides, dropping several smaller warheads is in general more effective than one single massive one.
Edit: in case you want to see the preparation & deployment of the largest explosives (FAB-3000) currently used by Russia in Ukraine: https://old.reddit.com/r/UkraineRussiaReport/comments/1e2wb9y/ru_pov_fab3000_installation_and_delivery/
Such an amazing game, wish I could forget it entirely and play it fresh.