I wouldn't have a clue how to do that 
If you have the "official" BB2 installed, then this should be done for you by the installation. Check that:
1) you have a file in DEVS: called "AmigaOS ROM Update" which is 321768 bytes
2) there is a SetPatch line in your S:Startup-Sequence and that it is not commented out with a ";"
3) that the Workbench "About..." menu shows Kickstart 45.57
If you are using the "unofficial" Boing Bag updates then everything also should have been installed for you and you need to refer to the documentation for it or have someone who has it installed correctly tell you what files and changes to the S:Startup-Sequence are necessary.
This page says ram-handler 44.24 is bugged:
It would probably be better to stick with ram-handler 44.23 if there is a bug. I didn't notice since the bug is not listed under the "AmigaOS 3.9 bugs" link not that I have had major problems. I'll have to ask Gulliver what the bugs are.