[4.2.2][Fake GALAXY S5 mini][SM-G800][Translation] Useful notes on Translating - Other Operating Systems and Languages

Hello
[INTRO](a little background)
This is a guide for those who want to have their phone in their language but the operating system does not have it built in. You can flash a new ROM that has it or install an app right? Not so much. There are reasons for these methods to fail or simply not work for your situation. My problem was that the bootlegged hardware was not supported by the official ROMs or the Android community. This forum is also riddled with threds that started by people who need to mod something about their phone but have no technical knowhow. There wouldn't be annything wrong with that exept that the awnsers in these threds are something along the lines "Oh you just need to do this thingnemabob" that's it one sentence pointing to a technical slang word that means nothing to anyone but a seasoned developer despite first post DIRECTLY STATES IT WAS MADE BY A PERSON ASKING FOR A STEP BY STEP SOLUTION OR A LINK TO A TUTORIAL!
[pre-procedure]
List of necessary software:
Zipsigner (this goes on your phone)
ADB
text editor of choice( notepad++ recommended)
AIO-Flasher
smali/backsmali (depeding on wether your system files are odexed more on that later)
APKstudio
[installing above software]
Zipsigner
Why you need it?
As you modify your apk files their signature changes. Basically if you change anything about them the phone will no longer recognise these as "its" therfor you need to convince your phone that these are in fact okay with zipsigner.
how to install?
This is an app. If you ever installed anything from Google playstore before than you know how to install it. Go to your Google play store app on your phone. Search for Zipsigner and pick the top app. Agree to all the demands and tap on install
ADB
why you need it?
this is a command line piece of software. these might be very scary to use but don't worry follow the tutorial and you'll be okay. That aside what is it used for. ADB is a powerful tool but we will use it only to copy and paste files to and from Phone
how to install it?
ADB comes packed up with Android Development Kit so the easiest way to install it is to get the ADK
[STEP 1]
Okay so you want to translate your phone for one reason or another. Make backup! Backups are important. You want to have something when you fail to fall back on. Yes "When" you fail. Not "if" you fail. You will screw up but as long as you have a proper backup everything is okay.
You can back up your phone in few different ways.

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Hello
[INTRO] (skip if you are not interrested in fluff)
For the past week I lived in Android Hell looking for what I thought would be a simple procedure and I wanted to share my expieriences somewhere so that no one else has to go through this flustrating expierience.
I got two phones (Galaxy S5 and Galaxy S5 mini)and I was taked with translating them. Well It should not be a problem I thought because it should be as easy as going into [settings]>>[region and langages] and choosing Polish. There is no Polish. So that was my first step towards the translating thiese.
[STEP 1]
First thing first backup. I am by no means a talented programmer or modder so I went with Samsung Kies but software didn't recognise neither phone. After fiddling with drivers and a back-and-forth with samsung costumer support we came to conclusion that phones are fake. IMEI of one identifies it as a Blackberry and other as Nokia >_< well okay they still have some sort of Android so there should be a way to translate them anyway. First thing on the agenda is still backup. So I went through a triall and error to get both roms dumped. I was successful with ANDROID AIO FLASHER which was a godsend after I failed time and again to push romdump's INSTALL into the phone. I managed to get one ROM off by now but other Phone still insists on denying me ability to dump the rom because of Segmentation error. but at least I have one rom backed up.
[STEP 2]
Okay I got myself ROM now what? I decided to make a transfusion. Why bother with getting down and dirty when you can just use the work of others. So I downloaded a ROM with same version of the Android OS and begun looking for language pack or something similar. No luck this is not how Android works. After some research I came to the conclusion that in order to make things work I need to basically decompile each and every APK file that refers to system functionality and translate Strings.xml by hand in order to ensure compatibility.
[PRESENT DAY]
this is where I am now. all I wonder if there is a way to add a new file in the APKs with polish in it or should I just translate English "strings.xml" file and set langage to english?
Feel free to point out faults in my logic as well as provide tips and tricks for those of us who bought our phones on the cheap and just want to usethem with language they are comfortable with. I will build up this topic with factual information that I come across and try to make this into a universal guide to Android translation with resources to download. I do this because no one should be subjected to this and there is no decent step by step guide on this forum just disjointed and incompleate information in posths here and there. Belive me I looked both here and Google and after two weeks of finding nothing more than a hints I want to just give back to the community all I found.