[Q] How to "un"flash a custom ROM. - Android Q&A, Help & Troubleshooting

Hi, I currently use a Rooted Nexus 5. After looking on the internet I could not find any guide regarding this.. I currently run CM 11 on it and I really want to try Android L/5.0 and I want more stability since CM 11, for me has quite a few bugs. However I want to keep my device rooted due to all of the beneficial features associated with it. Since the recovery menu is not default anymore as well, I have no idea how to make that happen since I can't find anywhere how to flash Android L. So I ask for help on this matter, hoping that one of you takes the time to respond.
Thanks in Advance, Ingazi (CM Version: 11-20141008-SNAPSHOT-M11-hammerhead)

Related

Questions about custom ROMs, rooting, and operating systems.

Hello all. I'm about to bombard you with a few noob questions that I'm really hoping someone could help me out with.
I'm currently using a Galaxy S2, but after reading a bit about custom ROMs and the ability to possibly increase battery life among other features, I have decided to delve a bit deeper. I do have a few questions though.
- What is the difference between rooting and using a custom ROM?
- Do I need a specific Kernel version or build number in order to use a custom ROM on my Galaxy s2 or does none of that matter when installing a new ROM?
- It is to my understanding that custom ROMs cannot use Kies. So, in the event that Android 4.0 comes out, will I have any problems being able to get it onto my phone with a custom ROM? Will it cause any interferences between the ROM and the new operating system?
I'm very interested in trying this out, however with the firmware I am currently running, there is no replacement to be found. In the event that I want to revert back to factory, it probably will not be possible to find this specific firmware that I am using (already searched).
Thanks a ton in advance for the help
Rooting gives you access to aspects and features on the phone that you otherwise couldn't get to. Installing a custom ROM wipes out the software on your phone and replaces it with software someone other than the OEMs developed.
You need to unlock your bootloader in order to install a custom ROM, and the process for this differs from phone to phone. Other than the different steps, it doesn't really matter what your phone has to start out with.
I don't know anything about Kies.
Honestly, I would highly recommend rooting your phone... just make sure you maek a backup as soon as you get root access (but before you install a custom ROM) and you're good to go!
roboedar said:
Hello all. I'm about to bombard you with a few noob questions that I'm really hoping someone could help me out with.
I'm currently using a Galaxy S2, but after reading a bit about custom ROMs and the ability to possibly increase battery life among other features, I have decided to delve a bit deeper. I do have a few questions though.
- What is the difference between rooting and using a custom ROM?
- Do I need a specific Kernel version or build number in order to use a custom ROM on my Galaxy s2 or does none of that matter when installing a new ROM?
- It is to my understanding that custom ROMs cannot use Kies. So, in the event that Android 4.0 comes out, will I have any problems being able to get it onto my phone with a custom ROM? Will it cause any interferences between the ROM and the new operating system?
I'm very interested in trying this out, however with the firmware I am currently running, there is no replacement to be found. In the event that I want to revert back to factory, it probably will not be possible to find this specific firmware that I am using (already searched).
Thanks a ton in advance for the help
Click to expand...
Click to collapse
There's probably a for for the GS2, where you can find details for your phone. Some methods of rooting on some devices do require a specific version of firmware. Give or take carrier issues I heard the GS2's were getting ICS in an update...
The main reasons to root your phone are to do things you can't do without root. For example using a VNC server you typically requires root, but it allows connecting to your phone via VNC. Custom ROMs are usually rooted; installing a custom ROM doesn't always need root (e.g. nvflash) but it helps eventually.
No idea what Kies is and I'm to cold to Google it. If it's in the market, check it in a browser to see what versions they support.
Sent from my Transformer TF101 using Tapatalk
Questions or Problems Should Not Be Posted in the Development Forum
Please Post in the Correct Forums
Moving to Q&A

[Q] Cyanogenmod porting requirements questions

Hello,
I just got a Droid Razr M off ebay and found it came with the OTA installed that permanently locks the bootloader... I was hoping to be able to run Cyanogenmod on it but there don't seem to be any current ROM's that are able to run on the stock motorola Kernel (i'm assuming this is the problem?)
I'm basically totally new to modding ROM's and android at this level, but I would be interested in trying to port Cyanogenmod for use with the stock kernel and then installing it through safestrap... I do have some experience with linux and programming so I may be able to get this to work. Anyone know any starting places or if this is an impossible project? Is this even possible? I've heard that Cyanodenmod requires an unlocked bootloader, but then I found an old CM rom that works with the stock kernel. If this is possible, will certain functionality be disabled or what will result from a not-fully-compatible kernel?
Any help or advice is appreciated!

Moving from CM11 to an other rom

Hello everyone,
I wanted to get rid of my stock rom and I didn't have much time to read much about it so I just used the CM installer which got me to 4.4.2 (I wanted CM10.2 and I thought I would have a chance to choose the desired version but I realised it just goes to the most recent one). I am not happy with the battery though and I would like to change rom and probably go to CM 10.2. The thing is I am pretty new to android and I havent even rooted a phone before. So I was wondering which are the steps from here to change a rom so I can read the relevant guides this time.
Thanks!
Geezor said:
Hello everyone,
I wanted to get rid of my stock rom and I didn't have much time to read much about it so I just used the CM installer which got me to 4.4.2 (I wanted CM10.2 and I thought I would have a chance to choose the desired version but I realised it just goes to the most recent one). I am not happy with the battery though and I would like to change rom and probably go to CM 10.2. The thing is I am pretty new to android and I havent even rooted a phone before. So I was wondering which are the steps from here to change a rom so I can read the relevant guides this time.
Thanks!
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1911726

[Q] A few questions about the Note 2

Hello, Im new here, Just heard about XDA and how its the best forum (knowledge-wise) out there. I dont have enough knowledge and experience with smartphones (Im more of a PC freak, building and hardware and stuff) but smartphones are a whole different subject.
lately Im having some "hangings" on my Galaxy Note 2 (N7100, 4.1.2 stock) it started when browsing firefox, and continuing to Whatsapp, it started freezing for a minute or so.. (which is quite a long period of time like u probably know.)
I started checking the whole Root&ROMs subject, and also found out that there's a way to update my phone to Android 4.3 JellyBean.
so here are my q's , What is the most CURRENT stable OFFICIAL OS (from what I saw online there's no 4.4.2 for Isarel-ILO (if it matters at all? Because I've seen a few official EU versions from various countries) and people just get a custom ROM of 4.4.2 to run it and also that quite a few ppl on here had some issues with it and were pretty happy about 4.3. So what do u think ?
also, I will probably need the best ROM for the OS you will recommend next (from what I read ROMs can boost phone performence) but I am not sure about it yet
but I am certain that I'm gonna root my phone, but can u tell me exactly how does rooting help ? I mean in which aspects and such..?
Thank you very much in advance, 73RM1N470R.
** just fyi, I figured I'd hard reset my phone and then update the Android to 4.3/4.4.2 which would help the hanging issue , and then root it. (not 100% sure about the ROMs..)

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 .

Categories

Resources