You can still get homebrew working on a fresh 3.60 Vita, however it will require you to send me your CMA backup ID via PM on here, so I can make you a valid VHBL CMA backup.
Also be sure you have already linked a PSN account and activated your Vita, as you will need to have an activated Vita to play PSP games, and you will need a linked PSN account for content transferral.
If you don't know where your CMA Backup ID is, go to C:\Users\USER\Documents\PS Vita\PGAME\xxxxxxxxxxxxxxxx\ (C:\Users\USER\PS Vita\PGAME\xxxxxxxxxxxxxxxx\ if you are using QCMA), where xxxxxxxxxxxxxxxx is the Backup ID you need to send me.
This is my first time making a VHBL backup for someone, so I hope that it will work out for you!