how do I update CS 4 to work wit OS Monterey

Normally, CS4 would keep working as it has already been activated.

In this case, the software is just too old. High Sierra was the last version of macOS / OS X that would run 32 bit software without compromise (Apple's words). With Monterey, it's hit or miss. Some 32 bit apps will run the same as always, others with some issues, and others not at all.

CS6 runs in Monterey, but even that requires some finagling to get everything in the Master Collection working. CS4 is simply from too far back to work in Monterey.

If you have a full, restorable backup from before the upgrade to Monterey, put the laptop back to Sierra so CS4 functions again. Then if you still want to upgrade the OS, go no later than High Sierra.

Actually, after thinking about it a bit more, there's no chance at all.

Adobe shut down the CS4 activation servers a long time ago. The CS6 servers about a year ago. So, you could install CS4 in a VM, but never activate it.

You don't. The only chance you have of using it in Monterey is to install a VM, such as Parallels. Install Snow Leopard Server within that, then the CS4 software.

With Monterey, it's hit or miss. Some 32 bit apps will run the same as always, others with some issues, and others not at all.

CS6 runs in Monterey, but even that requires some finagling to get everything in the Master Collection working. CS4 is simply from too far back to work in Monterey.

Were you saying Monterey when you may have meant Mojave?

Going from Monterey back to Sierra may be more involved owing to the APFS to HFS+ format change.

FWIW, the bottom line is, you can no longer run Adobe CS4.

+1

[Redacted as useless… /viking]

Oh! Yes, thank you for the catch, VikingOSX.

Yes, it will be more work than I said to go back to Sierra.