Can someone help me here! Mipad4

I have xiaomi mipad 4. I do not know about how to update my version of android. I have mokee center but it stops running when I click to update option. Is there any option that I can upgrade my android? I have 8.1.0 android version and I can see in 9.0 version in Xiaomi Pad 4 / 4 Plus - All - MoKee Downloads .
Below you can see my problem and version of mokee.085de056-952f-47eb-a0f0-0a3e14e05d36

  1. Backup your data
  2. download twrp, rom and gapps
  3. flash twrp
  4. wipe
  5. flash rom and gapps
  6. reboot

İt is not matter If I have installed mokee on my tablet before. Should I do it from bottom again.

Yes, all of the following cases need to wipe the data and reflash it

  1. UNOFFICIAL >> OFFICIAL
  2. Upgrade or downgrade the Android version

Is there any videos that I can eatch and do?