There are several ways to do this.
Assuming we are talking about a frugal install on some type of drive.
Download the BookwormPup64 10.0.8 ISO.
Do a completely new frugal install using this 10.0.8 ISO.
Note:
The main Frugalpup Installer, that is in BookwormPup64 10.0.7, can do the install, and update the boot loader, for booting the new 10.0.8 install.
Copy the old BookwormPup64 save you used in 10.0.7 into the 10.0.8 frugal install.
Now boot 10.0.8 and it should have all the settings and stuff you had added to 10.0.7.
Only stuff that would not still work is anything that is kernel specific software. It will have to be reinstalled for the different kernel that is in 10.0.8
This is safest way, because you still have the 10.0.7 working install, if something goes wrong. Later it can be deleted if you no longer want it.
A manual way.
This is best done by booting something other than the 10.0.7 install you are trying to update.
So it is not being used as you do this file replacement.
Open the 10.0.8 ISO in Rox file manager showing the contents.
Replace all the files in the 10.0.7 frugal install with the files that are in the 10.0.8 ISO.
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