Looking for something to do this weekend? Well, if playing around with unofficial BlackBerry 10 builds is your idea of fun, you can now grab OS 10.3.1.1151 and give it a go. Autoloaders, as well as all the signed files, have appeared in the CrackBerry Forums and a readily available for download for most BlackBerry 10 smartphones. The rest are still being uploaded. As always, if you download these unofficial files you do so at your own risk, but I'm sure you all know that by now. What's new? Well, the OS is only a few hours old so everything about it isn't known yet - best to check the forums for answers there.