If you're running an older OS on your Blackerry Z10, you'll be happy to know that an updated version has leaked today. The update will bring you to 10.0.10.261 but unfortunately will require a Windows PC to install. No reports back on this version just yet, but you can assume it fixes some issues but might have some new ones as well. If you're willing to give it a go, you can head into the forums to grab the installer and for full instructions. If it goes downhill, remember you can always wipe and restore your device.
As always - use caution when installing a leaked OS like this and remember if you break your phone it's not our fault :)