[Q] Need help on creating custom rom for new mobile - Android Q&A, Help & Troubleshooting

Hello ppl, i have a smartphone whose manufacturer is reliance,but since the phone is not so popular and not manufactured outside India,i am unable to get a custom rom for it .The device name Reliance reconnect 4701 doesent recieve any updates from the maufacturer and currently runs on android 4.2,i wish to update it to android 5.0 lollipop and so i need to build a custom rom by myself.I want to have a nexus lke experience with the lollipop,so i would like to install stock android on my device. I'm a complete newbie to this area of custom roms.I went through many threads on this forum to build a custom rom but got confused after going through many threads.So please if anyone could guide me on how to develop my own custom rom with android 5.0 lollipop. Thanks in advance
Specifications of mobile given below(since this is my 2nd post i couldnt link it sorry)
imgur.com/Dw8XcDR.png
imgur.com/xwiobNL.png
imgur.com/P9RwgNA.png

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[Q] Newbie Q regarding SAMSUNG GALAXY S3 GT-I9300 UNIFIED TOOLKIT

Hi there
I am a total novice so i apologize if my questions are a completely non-sense.
First of all a really big thanks to the developer who built this amazing and helpful toolkit.
My father is using an S3 European version Orange branded 4.1.2 Android version .I wanted to unlock it so it can work on different gsm carrier.I've installed ALLINONE option(Flashed Insecure boot,Recovery,Root,Busybox,Rename restore Files) Twrp Custom Recovery using the UNIFIED TOOLKIT.Then i used GalaxySimUnlock apk to unlock it.All went smoothly everything is working perfect the phone is unlocked.
Now i have 1 question:
If i'd like to use the official samsung software update because now is not working due to the rooting i am guessing or send the device back to warranty (unexpected undesirable event) I will have to use option no.8 present in the toolkit(Download extract +Flash Stock Rom via Odin).And will my phone remain unlocked OR option number 2-Unroot Option will be enough?(I mention that i didn't yet installed any Custom Rom).
Thank you so much!
The most stable custom Rom available
Going to flash my first custom Rom.Need your professional advice.Which one is being considered the most stable Custom Rom?Which version of Omega Series to be more precise,already downloaded the latest version V42 but read on the forum there are some little bugs I will be very grateful for your help Thanks
hapciu90 said:
Going to flash my first custom Rom.Need your professional advice.Which one is being considered the most stable Custom Rom?Which version of Omega Series to be more precise,already downloaded the latest version V42 but read on the forum there are some little bugs I will be very grateful for your help Thanks
Click to expand...
Click to collapse
What rom best rom posts are banned .
You choose .
No custom rom is bug free decide if the bugs rule the rom out or not .
Later is generally better for any rom build .
Omega is updated very frequently .
jje

Iam searching for official stock Android 4.4.4

Hi, i don't know if iam correct at all
But i need an official stock Android 4.4.4.(not custom rom, based on it)
Can you help me ?
Give me a link for downloading,
thanks
Good luck if you are talking about GT-i9300!
Kindly share if you find one!
gsms said:
Hi, i don't know if iam correct at all
But i need an official stock Android 4.4.4.(not custom rom, based on it)
Can you help me ?
Give me a link for downloading,
thanks
Click to expand...
Click to collapse
There will be no 4.4 official stock for galaxy s3, never, ever.
If you need 4.4.4 like CM go to cyanogenmod site and follow the steps (easy peasy installation).
It's true, that iam a newbie in Android's world.
I own samsung s3 since 2 months & it's my first android experience.
That's why i need a little explanation
why official stock rom for version 4.4.4. isn't available for our phones.
When Win XP has arrived , it was for all PCs, isn't it ?
gsms said:
When Win XP has arrived , it was for all PCs, isn't it ?
Click to expand...
Click to collapse
No Win XP was not available for Mac ! :silly:
gsms said:
It's true, that iam a newbie in Android's world.
I own samsung s3 since 2 months & it's my first android experience.
That's why i need a little explanation
why official stock rom for version 4.4.4. isn't available for our phones.
When Win XP has arrived , it was for all PCs, isn't it ?
Click to expand...
Click to collapse
That is samsungs decision, after some time they stop the development for the phone, and it's been 2 years now with s3, from ics to jelly bean, and the time has come and development is stopped.
But, you have samsung kitkat ports here on xda under android development, but, since they are unofficial there might be some bugs if you don't pair them with a good kernel.
Since you are new, i suggest you to take a break and read, read all the FAQ, read every info, read about EFS backup (very important) and then, when you have all the information you need, go with rom flashing etc.
And listen to me, if you won't read and inform yourself you will mess something up and come back here to ask for help, and first response you will get is read before doing anything.
Happy readin, flashing, cheers
In this case here is my next question
On the horizon appears the next version - Android 5.0
If i understand correctly, that means once again Android x.x will not be made available for our phones and we will need to get again some custom roms, aren't we ?

ROM for Samsung Galaxy SIII SM-G3812B

Hello, recently acquired this device, as it has the 4.2 version of android, decided to look for some more current ROM unfortunately not found, I saw that the other models of the Galaxy SIII have Custom ROM, then come here to ask developers to please, to create a Custom ROM, be it 4.4 or 5.0, many users need this help.
Anything yet
C'mon, I have this phone and I can't find any custom rom for it...:crying::crying::crying:
If you have the time, compile the ROM yourself, it is a time consuming process, but you achieve maximum peacefullness with your device. Look on YouTube or google how to do it.

developing custom rom for G700, all xda veterans please help me!!

Actually I have many question
I think when a newbie like me start to work on rom development then there are several questions arises in mind basically like what I am going to ask here, my purpose is to get all this doubts cleared before starting so that I can start to focus on things. I don't know if my questions will help other newbies like me but it will literally help me a lot .
I am trying to develop a custom rom for ascend g700 as i have seen it among the most hated device among developers , no one want to do anything for this phone and it can accomodate a lot of upgradation. I have seen g700 users begging inside CM forum to build a latest ROM for this device, I have also seen g700 owners begging on huawei website to upgrade their devices but huawei doesn't even feel like to give a word to it. and I feel really bad about this .
So i just want to build a good looking, working, clean, latest by look and feature rom for Ascend g700 for all users, there are various reasons why I want to do that:
1) One of the biggest reason why I am here is I want to see g700 users smiling with joy that finally somebody has updated their device, I want all g700 owners to feel worth buying the device.
2) No working custom rom is available for this device yet.
3) No Cyanogenmod rom available.
4) This device configuration seems potentially great which literally needs update (atleast up to kitkat).
5) And personally I don't like UI emotion of this phone besides that google play store has some bug which makes icons background looks black which is a sore to eyes, Huawei did nothing for this device yet except just earned the bucks from it. I hate the companies who are ignorant about their customers.
I don't want to bore anyone reading my thread but i have lots of questions to resolve before i start to develop something for this device and I hope i will succeed.
Okay so let's get started with my questions, all veterans are requested to kindly share their vast knowledge and help me understanding the facts. thanks in advance .
Objective: what i am trying to do is, trying to find out the latest possible (Lollipop) rom which I can use as base rom to flash this device (Ascend G700) or just build a custom one fully working.
1 First: Are there any neutral latest android rom versions are available from google official websites to start using on any device or to start develop it for any particular device?
If "yes" then from where i can get it?
If "No" then from where the companies get their android roms on first hand as a clean plain base android rom to make it their own rom?
2 second: Can i just install any rom of any phone and it will start to work?
If "No" then what maybe the problems that I would first encounter?, what can I do to fix that any such known problems?
3 Third: I have heard about porting rom by changing things inside rom like replacing kernel of base rom with my stock rom, Kernel of my stock rom (4.2.1) can work with lollipop rom (5.0.0)? if yes then which lollipop rom would be best to use for (G700) and from where I can get one?
4 Fourth: Can I use my old kernel, camera and radio from stock rom in newer lollipop rom will it work? is it possible to do that?
5 Fifth: Can I use any kernel on any phone? or there are any specific particular to device types? or is it necessary to use the old kernel?
6 Sixth: If I flash my phone with custom new rom the radio will also be flashed with it automatically? even if I doesn't want to? How would I know that the rom i am going to use contains the flash files for radio also? and can i remove that? and use rest of the rom?
7 Seventh: If i flash my phone with new custom rom what are chances that it's camera will not work? or radio maybe affected?
8 Eighth: What can i do to port my camera from stock rom to new custom rom which I want to flash. the camera of old rom (4.2.1) can work with lollipop (5.0.0)?
9 Nineth: The device is a dual sim, any special thing to keep in mind before flashing a rom? a rom should necessarily be valid for dual sim? are there any specific types?
Please all the veterans from XDA are requested to provide inside to all these questions of mine, so that I can start working on my custom rom, I seriously want to upgrade this phone please help
Any help from anyone who knows anything related to any question of mine are welcome to share their knowledge.
Thanks in advance .

What Would You Choose??? Custom ROM or Privilege of root access with Stock ROM.

Hi All,
This thread might not be interesting to many "Geeks", who are aware of flashing custom ROM, Unlocking Bootloader, Get root access of your android device, Android Development and many more.
But your response might help few newbies who are still have no clue about these terms but wanted to do some techie stuffs wit their Android device.
Which is the best option you would prefer to ?? Newly rolled out fresh latest custom ROM on your device or Stick to same old kernel, baseband, ROM and wanted to play safely with rooted device.
P.S:- You can share the threads of discussion which are already shared so that this topic could bring an over all idea/benefits/Dos & Dont's of custom ROMs and Rooted devices .:good:

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