simple answer, You cant use vhbl... not yet anyways,
If you update to 1.67, you will be able to get onto PSN but they removed the game, so Sony will bring out another update that will patch the exploit in this game before they put it back up, So the only way you can use vhbl is if you keep your vita up to date and wait for another game exploit to be released. THAT is when you dont update and buy the game before Sony removes it from PSN. Its the only way. so yeh, Im afraid you're fresh outta luck for the time being.
AMD FX 8-core 4.2Ghz, 16gb RAM, GTX 580, 60gb SSD, Blu-ray Burner, WiFi, 1.5TB HDD, 1000W PSU, 27" Full HD MonitorMy PSP
Slim 2002 - TA-085My PS3
Slim 160GB 4.25 OFWMy Vita: