Galaxy S4 GT-i9505 update to 4.4.4?

[stevenlcroucher]

I've finally given in and bought an unlocked Galaxy S4 GT-i9505 to replace my aging Palm Pre3. The handset has automatically downloaded several firmware updates and is now on 4.4.2. Can it be upgraded to 4.4.4? I presume 5.x would be quite slow on an older handset like the S4?

Thanks.

Steve