in first day of v6.5.15+ released, there is no such checksum, it still the same as before, only until 4 days since release, there is toggle in backend that enable the check, remain unaffected for older base
if one of these is modified (even one bit) will trigger checksum fail that refuse to accept login from
all of this is both app & server side, server side ask for checksum, the client get sha256 hash and send to server side `getSHFiles` and if something mismatch, the server side will refuse to login and return GW934 as response to app
```shell
# outside assets (v6.5.15+)
mb.apk/AndroidManifest.xml
mb.apk/lib/arm64-v8a/*.so # previously is libapp / zshield & zdefend libs only since v6.4.63+
mb.apk/lib/armeabi-v7a/*.so # previously is libapp / zshield & zdefend libs only since v6.4.63+