My UP2414Q shows a split screen when I run it from my new 2017 MacBook Pro. According to Apple's website article here 

https://support.apple.com/en-us/HT206587

I should just be able to do this

• Dell UP2414Q and UP3214Q: Choose Menu > Display Setting > DisplayPort 1.2 > Enable

And it should work fine, but instead it makes the screen split and the computer sees it as 2 separate screens. 

Having done a little research it seems that Revision A00 had firmware issues and was updated on 2/24/14 to A01 which got rid of the bugs in the firmware. Unfortunately even though I bought my monitor on 7/24/2014 I somehow got the older broken version.

I originally bought this monitor with the intention of using it eventually at 4K 60HZ. Is this possible? Is there a firmware update out there somewhere that would fix this? Or would this thing be covered under warranty?

Purchased 7/24/2014 from B&H

S/N CN-06X55C-74445-410-220L

2017 Macbook Pro with Radeon Pro 560 and Intel HD graphics 630

Via Thunderbolt 3 -> TB3 to mDP cable -> Mini display port

OSX 10.12.6