[General Questions and Answers] LS.xD:
All files to get here-->Xolo Q2000 ROOT + UNROOT + STOCK

BUT i explain it to your a little shorter just hold on a minute ;)

OTA(on the air) update:

OTA is a stock rom (also used as an update) released by the manufacturer of your phone. E.g. update Android 4.12 -> 4.22.

OTAs are very unsecure to use as you can update from running system which great chace of getting issues or a fully crashed rom ar in worst case a brick. Cause the update can be affected by installed apps, running processes, wrong executed scripts and so on. If you look on XDA you will find a lot posts of people with phones got different kinds of problems and issues while using ota on a system tahts already in use.

RUU/FIRMWARE --> is a full system image that will be installed via usb cable an a updtae tool running on your computer or a special "Flashtool"

This will work pretty good and safe AS IT RESETS YOUR SETTINGS back to stock so you will not have any errors in most cases and also can restore a phone that crashed before.

No matter if OTA or FIRMWARE (provided files can be identically by the way) its NECESSARRY to install only version fitting your phone type and may be region an carrier/provider. Wrong files will definitely BRICK your phone.

ROOT ist the lowest storage area you can acces. E.g. if you put i file direct on your sd-card its on the root of it. The internal storage is splitted due to different needs of android. On a stock rom many folders or partitions can't be accessed by the user or grant just permissions to "read" files BUT NOT edit or delete them.

ROOT ACCES (or called offen just ROOT/ED) means that you have forced to changes the devives settings to grant user FULL ACCES and WRITE/DELETE ability on every part of the storage in your phone. Thats really powerfull, bacause the most "GOOD" features you can only use if this acces is granted to you e.g.

- DELETE preinstalled but NOT NEEDED apps

- Control network by using a REAL firewall

- Controll all processes on your phone

- using a adblocker

- backup / restore every part of your system/data

- use different file systems

-overclock / undervolt CPU

- MUCH MUCH MORE

BUT its RISKY if you dont know about how to act right and you can easily CRASH your installation or even FULLY DESTROY your phone if you set things that simply will kill teh hardware or delete files needed to get android working

UNROOT (disabling root acces)

and the best of all:

CUSTOM ROM:

Android is open source so every one eho can develope it by pgrogramming may modify/improve it and also add new features. Stock roms are always SLOW/FULL WITH CRAP allow just a few settings ti interface performance and how the device should behave or even NOT BEHAVE. Stocks have in most cases lots of apps preinstalled which are locked by default. So ycant delete/stop them. Means that may be some apps you NEVER USE alsways RUN IN BACKGROUND. That handled like that for systems are force to beeing much slower/laggier/customizable as android technology and the used hardware would provide it. + the user installed preferred apps additionally ;) During long use rom will also slow down more an more. That in best case after a year or may be two you just think OMG i need a new phone for sure. Then your manufacturer tells you LOOK at this all new features... (May be they were just holded back and not related so hardware in many cases) For example my old Galaxy W (from 2011) runs a highly modded, slimmed and customized to my personal needs Android 4.4.2 KitKat rom, as you get with the latest generation phones. Of course the device is old ad has outdatted hardware, but newest android itself runs really good :D

So to get the best experience from your phone you need to remove all restriction possible. Unlock/root/security flag off so that u can really use what you want and DELETE anything you don't need/like/slow down phone/track and sniff your personal data. every Stock phone knows A LOT abour who you are and what you're going... Of course also a custom rom will need data to work. But at least you can control every single app. Set every permission of all apps or even trick sensor datas to give apps faked data if they should not track you.

As you can read: i really love to modify phones xD