[Xiaomi Redmi 8 Guides, News, & Discussion] Estatè Mosconi:
Hi, here's my guide on how install Ancient OS 5.2 (A11) on Redmi 8

What doesn't work

- Bluetooth

- 4g network and VoLTE (Fix below)

- Brightness slider and auto-brightness (Fix below)

Fixes:

- For brightness: Open settings -> Go in "Phh Treble Settings" -> "Misc Features" -> Scroll until you are in backlight menu -> Select "Force alternative backlight scale" and "Enable auto-brightness overlay" -> then deselect both and reboot

- For 4g and VoLTE: Open settings -> Go in "Network and internet" -> "Mobile network" -> Tap on "Preferred network type" and select "LTE" and then reboot

Note 1: If you find a fix for bluetooth describe it in comments, I will update the guide

Note 2: If you fing other bugs tell me in comments, maybe I could help you (I'm not the developer of the rom)

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IMPORTANT ADVICE:​

I am not responsible for any damage caused to your device by not following the steps or negligence at the time of this process, all the steps were carried out and tested on my personal device and are confirmed, my device is Redmi 8 4/64

Installation Steps - All the files you need are HERE​

Note 3: I did the installation coming from Mui 12.0.1 stock (flashed in fastboot with Mi Flash) and there was no problem in the installation process or in the boot process

1- First make a backup of all the necessary information in case something goes wrong you can easily recover, Charge the battery at least 80%

All your data will be deleted during the process

2- Unlock the Bootloader if you have not already done it or do not know how to, follow this post: http://en.miui.com/unlock/

3- Before continue following steps estract on pc "system-arm64-AB-vndklite.img" from "AncientOS-R-Society-v5.2-ARM64_AB_vndklite-Iron-20210227-vanilla.zip" and activate USB debug in phone settings

4- Reboot in fastboot and connect the phone to the pc with cable

5- Install on pc minimal adb tool (zip at the bottom), flash the TWRP recovery typing " fastboot flash recovery ", now drag twrp file near the command, then vbmeta typing " fastboot --disable-verity --disable-verification flash vbmeta " and drag vbmeta file near the command. Finished the procedure type " fastboot reboot " and hold volume + on the phone until you see the recovery screen

6- Scroll on the slider at the bottom of the phone screen to access in the TWRP

7- Go to Wipe -> Format data -> type "yes"

8- Go to Reboot -> Recovery

9- Go to Wipe -> Avanced wipe -> wipe dalvik, data, cache and system

10- Go to Reboot -> Recovery

NOW YOU HAVE TO TRANSFER ALL OTHER FILES OR IN THE INTERNAL STORAGE OF THE PHONE OR IN SD/USB WITH OTG CABLE

11- Go to Install -> Select the storage where you have files -> Install img -> select "system-arm64-AB-vndklite.img" and flash it (Extracted from the zip)

12- Wait and then go to Reboot -> Recovery

13- Wait and then go to Reboot -> Recovery

14- Wipe -> Advanced wipe -> select "system" and click on "Repair or change file system" -> Resize system

15- Wait and then go to Reboot -> Recovery

16- Install -> Select the storage where you have files -> Flash "GSI-BUGS-FIXER_11_Q.zip"

17- Wait and then go to Reboot -> Recovery

18- Install -> Select the storage where you have files -> Flash "open_gapps-arm64-11.0-nano-20210130-TEST.zip"

19- Wait and then go to Reboot -> System

20-Configure phone and enjoy your new rom ;)

Note 4: Rom is pre-rooted, you only need to install magisk apk, file below

Note 5: I reccomend you the best gcam I've found for Redmi 8, everything works except slow motion, link HERE

Thanks for the attenction​

-Estatè