General Guide for building TWRP - Samsung Galaxy A02s

TWRP for a12s
=============
Mod Edit: TG link removed.
git config --global user.email "your email"
git config --global user.name "your name"
Basic Device Tree
==================
mkdir TWRP
cd TWRP
git init
git clone https://github.com/twrpdtgen/twrpdtgen
pip3 install twrpdtgen
sudo apt install cpio
copy stock recovery.img to ~/TWRP/twrpdtgen
cd twrpdtgen
python3 -m twrpdtgen recovery.img
rename ~/TWRP/twrpdtgen/output/samsung/a12s/omni_a12s.mk to twrp_a12s.mk
delete vendorsetup.sh
Make a copy of recovery.fstab and rename to twrp.flags
Move both files recovery.fstab and twrp.flags to recovery/root/system/etc
(create these folders)
open twrp_a12s.mk and
1. delete the 3 lines below # Inherit from those products, Most specific first.
replace those 3 lines with this
$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base.mk)
2. delete $(call inherit-product, vendor/omni/config/gsm.mk)
3. change omni to twrp (2 places)
open AndroidProducts.mk
change omni to twrp (4 spots)
Optional Extras
==================
To add extra options to recovery you can add theses lines to
boardconfig.mk
• # remove TrueType fonts
• TW_DISABLE_TTF:= true
• # exclude mtp from twrp (disable if you are not able to fix it device/kernel side, saves some space)
• TW_EXCLUDE_MTP := true
• # screen will stay awake
• TW_NO_SCREEN_TIMEOUT := true
• # needed on devices without a recovery partition (some devices have recovery included in boot.img)
• TW_HAS_NO_RECOVERY_PARTITION := true
• # removes the reboot option to boot into bootloader, needed e.g. on samsung devices which use Download mode instead
• TW_NO_REBOOT_BOOTLOADER := true
• # add an option in reboot menu to reboot into Download Mode
• TW_HAS_DOWNLOAD_MODE := true
• # some devices don't have a temp sensor, disable in such case to stop spamming recovery.log
• TW_NO_CPU_TEMP := true
• # recursive delete by default instead fotmatting (available optional inside recovery settings too)
• TW_ALWAYS_RMRF := true
• # system won't be unmounted,
• TW_NEVER_UNMOUNT_SYSTEM := true
• # don't blank screen (available optional inside recovery settings too)
• TW_NO_SCREEN_BLANK := true
• # ToyBox (disables busybox?)
• TW_USE_TOOLBOX := true
• # include f2fs support (make sure your kernel supports f2fs!)
• TARGET_USERIMAGES_USE_F2FS := true
• TW_DEVICE_VERSION : = Your Nikname or else
Establish Android Building Environment
=======================================
cd ~
sudo apt install git aria2 -y
git clone https://gitlab.com/OrangeFox/misc/scripts
cd scripts
sudo bash setup/android_build_env.sh
sudo bash setup/install_android_sdk.sh
• Make a directory called ~/a12s-twrp
cd ~/a12s-twrp
repo init --depth=1 -u https://github.com/minimal-manifest-twrp/platform_manifest_twrp_aosp.git -b twrp-11
repo sync -c --no-clone-bundle --no-tags --optimized-fetch --prune --force-sync -j4
copy ~/TWRP/twrpdtgen/output/samsung to /a12s-twrp/device
Building
========
. build/envsetup.sh
lunch twrp_a12s-eng
mka recoveryimage –j4
Recovery.img at out/Samsung/a12s/...img
Note: This LastPart Failed For Me For Lack Of RAM In My VB
To Add Things To Your Twrp, You Can Find Them On Experienced Dev's Githubs.
For Example
topser9 - Overview
Kernels for Exynos 7884B | 7904 | 9610 | 9611. topser9 has 16 repositories available. Follow their code on GitHub.
github.com
mohammad92 - Overview
mohammad92 has 172 repositories available. Follow their code on GitHub.
github.com
crazo7924 - Overview
Android developer. crazo7924 has 47 repositories available. Follow their code on GitHub.
github.com

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Hello! Even though this tutorial is for a specific device (I think, please correct me if i"m wrong), will this work for basically any device? And will this work for devices running Android 11 and 12?

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SM-A032F / DS