There is a high chance that kexploit is patched in 8.00.. The flow submitted another vurnabilties... Sony rewarded flow with $10k again .... And someone is also working on webkit exploit.. So i recommend to stay on lower firmware if you are interested in homebrew...
Interesting, it was nice Sony let him release the last one after they patched it. Certainly something to keep a look out for!
The flow left ps4 scene because of playstationhax issue with flow... Maybe he is not going to make this vurnabilties public.. But let's wait and see