Aimphetamin - 2017-06-18

had the problem on all ROM's, only 522 booted... (6gb+64gb)

how i fixed the problem but keep in mind, i'm not experienced with android and don't know how it can affect your device

backup "boot" in TWRP from 522.
flash 528, install Gapps
Restore "boot" from 522 build.
Restart phone.
Have fun using the newest build :)