meoapkpatch

release apk ready to run: https://github.com/pushdword/meoapkpatch/releases/tag/release-main-4.8.0

note: you have to install it via ADB. First enable USB debug and you can install over the network via ./adb connect IP; ./adb install -r file.apk

decompile

use apktool to decompile

apktool d meo.apk

apply patch

read the patch file and change yourself or apply it using patch. patch file expects the folder to name MEO_4.8.0 - created based on this version

patch -p1 < meopatch.patch

if you see "different line endings" error, just:

dos2unix meopatch.patch
patch -p1 < meopatch.patch

accept the changes.

build using apktool

apktool b -f -v meo -o meo-patched.apk

align in 4-byte (required for newer API levels and SDKs)

zipalign -f -p 4 meo-patched.apk meo-patched-zipalign.apk

(exists on android SDK)

sign using apksigner (jarsign doesn't work with 4-byte alignment)

apksigner sign --verbose --ks meopatch.keystore meo-patched-zipalign.apk

input your keystore password to unlock and uses the pki
you can create a keystore using keytool (found on JDK bin folder):

keytool -genkey -v -keystore meopatch.keystore -alias meopatch -keyalg RSA -keysize 2048 -validity 10000

(exists on android SDK) meo-patched-zipalign.apk is now signed and ready to install

install meo-patched-zipalign.apk via adb (enable USB debug via developer mode - tap 10x build name on settings -, find the IP address, ./adb connect IP, ./adb install -r meo-patched-zipalign.apk, disable USB debug and develop mode)