i will put here all things i knew about UMIDIGI F1 Play

unlock bootloader

enable developer option:

on your phone

Go to Settings –>> System –>> About Phone and press on Build Number 7 times until you see a message "You are now a developer”

now open the developer option and enable the OEM Unlock toggle and enable USB Debugging

now connect phone to pc using USB cable

then

download ADB and Fastboot Tools  and extract to folder

in a folder press shift in keyboard + right click mouse and press open powershell in current folder

:in powersehll window type

adb devices

will popup window on phone "allow usb debugging?"

press ok

then type

ADB reboot bootloader

now into bootloader mode

type:

Fastboot flashing unlock

on phone will you see a messege "press VOL+ for accept" or something like that

now your bootloader is unlock

custom recovery

to install TWRP recovery on UMIDIGI F1 Play can't using adb method -idk why!-

the successful method via SP tool

download SP flash tool

download TWRP recovery

download latest stock rom

Extract rar file

turn off your phone -don't into adb or fastboot mode just turn off-

open SP flash tool

choice The scatter file (MT6771_Android_scatter.txt) from rom was extract it

unselect all options and select recovery only

press on recovery word and choice TWRP-xxxx.img

press download button

now connect your phone using usb cable

and SP tool will downloading recovery 

waiting to show "ok" and then turn on phone

now you have TWRP on your phone

install AOSP 17.1 with android 10

download rom file

download gapps -i recommend nano version-

into TWRP recovery 

install rom file

install Gapps file

restart phone

now you have UMIDIGI F1 Play with android 10!

rooting

into TWRP recovery and install magsik.apk

and install it like a rom installing

enable camera2api

-this option to camera apps using full function of camera-

download Camera2API Magisk Module

move the file to phone

open magsik manager

press options then Downloads

in search field type camera2api enabler

press download to flashing

disable secure_flag

- this option to enable screen shot/record in secure apps-

download SmaliPatcher

connect phone to pc using usb -don't turn off-

run SmaliPatcher

waiting to load all data

allow usb debugging message on phone

choice secure flag

-can choice mock locations or else if want-

press adb patch

wait to complete

go to phone and will be find secure flag module in magsik

download it

done