Im upgrading from 3.0.7 to 3.0.8. I heard that the hacks will need to be installed again. I know its simple as running the installer again. My biggest question, i have a board that has over 300 v3arcade games installed. If i upgrade, does that mean i have to add all of them manually?
for other hacks: yes, you will lost them all, just run the installer is not enough to get the hacks working, it is like you hack into a fresh board without running needed queries.
There aren't many changes from 3.0.7 to 3.0.8 as far as I know. You'd be able to compare files using a file comparing program and add the changes that way. I might be wrong about there not being many changes though.