Is there a way to backport the latest ISA v22.3.9 to NG 21

On CE NG 21 I notice that when I play a livestream on Sky Go NZ addon when it goes into an ad break the stream freezes.

I figured out that is due to ISA version 21.5.18.1 that it is causing this issue and when I run the Sky Go NZ addon on another device with ISA v22.3.9-Piers this issue happens rarely. Is there a way to backport the recent ISA v22.3.9-Piers onto NG 21. The reason I’m asking is that if I update to NO 22 I would lose DV P7 FEL support.

If this is not the right place to ask. Who should I be talking to?

Update to CE-22.