[Q] upgrade android 4.2.1 to 4.4 on hisense u970 topic

Hello everyone

i am really new on this and i have a question
i have a similar device to hisense u970 and i want to know if there is a way to upgrade my android version from 4.2.1 jellybean 4.4 kitkat or any newer version
i also rooted my device with framroot 1.81 and it works fine
thank you in advance