Hey there ! I just downloaded the Unit 13 demo (which took approximately 2h to complete), I disabled wifi after this of course, and the VHBL is still working
But if you don't want to take the risk, you can always turn off your wifi router, turn your PS Vita on and disable wifi on it (and remove your wifi settings too, just in case) and then turn your wifi router on again
Fun fact: PSP emulator is still having a lot of backdoors that are not patched.
Vita mode is also having some serious problems with me. When playing Unit13 the game stuck a lot of times on loading a save-game. Also when you eject the game and push the PS button it will start to blink. I cannot get it to work anymore. I let it run dry on battery but when i switch it on the PSVita still has black screen and a blinking PS button. So i guess we can do something with that. Time will tell... Unfortunately i cannot help because of the blinking PS button.
EDIT: Don't panic. To save the PlayStation Vita from the blinking blue light of death, hold the On/Off button located on the top of your Vita for about 30 seconds. Your Vita will boot into a debug menu where you can choose to start it up normally.
Last edited by B4rtj4h; 03-10-2012 at 04:43 PMReason: Found solution :D!