Most of the times, you can just pour the resin with the stock settings using the stock cartridge and it might work.
I recently got greyv4.1 and it works with the v4 profile.
So this information is amazing because it confirms FL is just trying to lock down users, and pushing by discontinuance of materials users to buy new machines. Yes F4 is faster, but materials are cheaper, looks like punishing users for not buying new machines.