Give me 5. Some fella posted it on aff...
https://mega.nz/#F!pUFh3aRS!RoM0sdzTe7AU3HNeNvZCUQ
Download that as a zip to your PC. Unzip it and copy the contents to a USB.
Plug the USB into the unit, go to settings, car settings then hit update MCU.
It automatically starts from the goods on the USB, there's also a canbus update which you can install after the update. To do that navigate to the USB through the file explorer app and boom your updated.
I'd run your car whilst updating it as any power cut could brick it cos android.
Just bug fixes as far as I know, pissweak I found it via aff not from the Kayhan site.
They have a video but it doesn't really show how to do it.
From what I noticed, dual zone now works properly and outdoor temp seems faster/more accurate.
Only used it for 5 min so can't say that's it for sure.