instructions
- flash rom
- reboot recovery
- format data
- reboot recovery
- flash gapps
- flash kernel
- flash fw
- reboot system

follow carefully if you
forget to reboot recovery again
gapps will return partition sizing error
you need a reboot after format data

-----------------------------------

Google might deny the login

So do the following, install this app from somewhere

https://play.google.com/store/apps/details?id=com.github.kolacbb.ids

- GSF ID, copy that
- go here google.com/android/uncertified
- paste and click register
- reboot phone

- open this
- click 3 dots
- disable auto update