about as dangerous as boiling an egg lol

honetly guys you should flash your device. i used to be in same position as you post pr1.2
i had brought my phone from vodafone and was running their firmware variant. it was painful waiting around for an update that was never coming!

i'm no geek, just a regular user and after reading a few threads and the wiki i just flashed to pr 1.2 global. i done a backup and only flashed the firmware not emmc. follow instructions, its very simple only takes like half hour. once thats done just do a backup restore and all your settings and apps will be reinstalled on your device.

simples (compare the meerkat lol)