[Xiaomi Redmi 8A Guides, News, & Discussion] Ga_hap_la_chanh:
Disclaimer: I'm not a dev, i'm just someone who has a lot of time to do research on Windows, Android... So that i can say i'm quite a talent that stuffs when other don't, may be just know to use Facebook, Youtube or something similar. But when you're here, want to read my topic, i'm happy you're something like me, want your phone yours and yours only, want to do more with your phone. So let's get started.

- My Phone: Redmi 8A -4/64 China Variant, i'm not from China though. Running Xiaomi.eu rom 11.0.4.0 as base to install gsi. I have tried Global Rom but it's incompatible with my phone (random reboot, missing imei, no MAC address...) so please flash another market version with caution.

- Why i write this topic? Because firstly i want to demonstrate how to install a GSI rom. Secondly, i feel somehow wifi speed on MIUI is ridiculous, only 500-600kb/s, it takes me 15 minutes to download a 16mb app; random ping in game, that make the game not enjoyable. This wifi symptom is like on a phone from my country, Vsmart joy 2+, run on the same entry variant 4xx, due to support wifi 2.4 ghz only. (Because bluetooth interfering with wifi 2.4 Ghz and our device doesn't support 5ghz wifi)

Compare to MIUI, Havoc OS has somethings i like:

+ Faster download/upload speed: no delay with wifi bluetooth interference

+ Doesn't have bloatware, you choose what you want to install

+ All known bugs i mentioned in my previous topic are fixed, except Auto Brightness - i don't use it though

+ D2TW needs to be fixed. But i have a workaround using Magisk and root.

And a lot that i dont write all here.

Instructions:

Read my previous topic first, all instructions below will focus on Havoc OS only.https://xdaforums.com/xiaomi-redmi-8a/how-to/guide-how-to-install-magisk-miui-how-to-t4030175

0) Backup Backup Backup, be sure to have a plan in case anything goes wrong. I use a offline disk drive to backup anything important.

1) Unlock Bootloader, Install TWRP or Orange Fox. If you come from stock MIUI, use Volume Up + Power to enter recovery directly after flash with Fastboot, ortherwise, stock recovery will be replaced.

Remember to flash vbmeta.img.

2) Download all the files in my post, download Havoc OS GSI and extract to get system

From Official Havoc OS here: https://sourceforge.net/projects/havoc-os/files/a64-ab/ (Newer Version)

Download Opengapps (optional) from opengapps (10/arm/nano or pico)

Download boot.img from my previous topic, choose the right version matched your phone version.

3) Copy all the files to the phone. I recommend use a micro sd card because internal storage may be encrypted, or you can format data first, your call.

4) Format the following partitions: Cache, Dalvik, Data and System

5) Install system image to system partition.

6) Install permissiver_v5

7) Resize system partition to install opengapps.

8) Install Opengapps or what gapps you choose

9) Flash Certification + Patch

10) Reboot. If bootloop, format data. Not wipe data. Then setup your phone.

11) Install Magisk Manager. Follow the app instructions.

12) Install d2tw module to have d2tw feature. If it doesn't work, then try an alternative way:

Open /vendor/bin/init.qcom.post_boot.sh and add the string:

sendevent /dev/input/event2 0 1 5

then reboot

13) Enjoy Havoc OS. Install apps, configure settings...

How to Update

- Flash system image over, no wipe require. Just reboot.

Bugs

I don't use the phone often so i can say it's stable enough to be a daily driver rom. If there's any, just comment below so i can add them.

Additions

- Here are all apps i want to install on my phone: Youtube Vanced from https://vancedapp.com/; Bromite for browsing; modded messenger from @evilwombatHere, outdated version but still okay.

- If you don't like stock camera, you can use gcam, here is a working version i download from Telegram group: Here

- To fix Recording, from Misc features -> Force Timestamp Source, choose Clock boottime

And that's all. Now enjoy!

I gifted my sister this phone so i don't have device to test anymore. Still, sometime i'll test if i can. The guide still works so enjoy flashing!!!