Somewhile ago, there have been a few rumors about a possible Flyme 5 beta for the MX3 and MX2.
Around 2 days ago this became true – at least for one of the devices.
Meizu now officially supplies Flyme 5 firmwares for the MX3. However, they point out that currently it is the first release of Flyme 5 and therefore could be extremely buggy.
For those who still own a MX3 this could be farly interesting to try. It will be even more interesting to see how far Meizu is going to take the support of the MX3, which has been released almost 3 years ago.
Nonetheless, enough of talking. Give it a try!