What exactly is the bootloader? - Xperia Arc Q&A, Help & Troubleshooting

What exactly is the bootloader and what advantages can be gained by unlocking it? I'm new to rooting and related stuff, and I would like to know because I'm keen on rooting my device and, perhaps, installing a custom ROM on it.

Lycan73 said:
What exactly is the bootloader and what advantages can be gained by unlocking it? I'm new to rooting and related stuff, and I would like to know because I'm keen on rooting my device and, perhaps, installing a custom ROM on it.
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en.wikipedia.org/wiki/Bootloader#Boot_loader
Unlocking is required for custom ROMs, rooting doesn't require unlock.

Thanks a lot, mate!

Lycan73 said:
Thanks a lot, mate!
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I have an Android phone for about 3 weeks now, it wasn't that hard to find, so try searching for it first ;-)
*though I bricked my phone almost (a)

Related

Weird?

Well, ahmm, I'm kinda... wondering, what are the reasons why phones get bricked. Can you tell me tips and tricks on how not to get your play bricked. Thanks.
~noob
Don't unlock the bootloader and do an ota(over the air) update that's a sure fire way to get bricked
Sent from my R800i using XDA App
Learn a bit about what you're attempting to do and why it works or doesn't work (ie. adb commands, fastboot commands, build.prop settings), that'll greatly help prevent bricking your device. Knowing is the first step to prevention. Oh, and ALWAYS backup your nand before doing anything you're not sure about (ClockworkMod Recovery is your friend here).
Okay, but i'm going to unlock the bootloader, un-root my xperia play... following the tutorials i can find in these forum. Is it okay? By the way... weird question, what does un-rooting, unlocking the boot loader's benefits?
.mitsuki said:
Okay, but i'm going to unlock the bootloader, un-root my xperia play... following the tutorials i can find in these forum. Is it okay? By the way... weird question, what does un-rooting, unlocking the boot loader's benefits?
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Click to collapse
Why would you want to unlock the bootloader and unroot? that makes no sence, most people unlock there bootloader so they can root
.mitsuki said:
Okay, but i'm going to unlock the bootloader, un-root my xperia play... following the tutorials i can find in these forum. Is it okay? By the way... weird question, what does un-rooting, unlocking the boot loader's benefits?
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Click to collapse
If you don't even know why you're rooting and unlocking.... why try to?
Cuz, I can try unavailable features, extra application, in all, i wanted to unlock the phones potential, in addition, custom ROMs can give me the latest version of AndRoiD. that's why.
I think he means he wants to root, and he thinks unroot = root
.mitsuki said:
Cuz, I can try unavailable features, extra application, in all, i wanted to unlock the phones potential, in addition, custom ROMs can give me the latest version of AndRoiD. that's why.
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Click to collapse
Copy this post and insert name, It will save you the trouble of writing it out later
http://forum.xda-developers.com/showthread.php?t=1320139
I can't understand what you're saying AndroHero and ff7fan4eva, will you explain it??
.mitsuki said:
I can't understand what you're saying AndroHero and ff7fan4eva, will you explain it??
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Click to collapse
They're saying, in a slightly sarcastic/joking way, that you should read up on these matters:
What is a bootlader. What is root. What is ADB and Fastboot. Then read up on 'how to' and what to do and not to do on these subjects.
You'll most likely end up with a brick if you don't spend some what time on reading a bit before you get into unlocking/rooting etc and/or posting alot in here about issues you've encountered. Not saying that won't happen even if you read about it, but then you atleast know what you tried to do and how and that'll make it easy to help you.
Regards Dousan...
Dousan said:
They're saying, in a slightly sarcastic/joking way, that you should read up on these matters:
What is a bootlader. What is root. What is ADB and Fastboot. Then read up on 'how to' and what to do and not to do on these subjects.
You'll most likely end up with a brick if you don't spend some what time on reading a bit before you get into unlocking/rooting etc and/or posting alot in here about issues you've encountered. Not saying that won't happen even if you read about it, but then you atleast know what you tried to do and how and that'll make it easy to help you.
Regards Dousan...
Click to expand...
Click to collapse
Sorry dousan i have a bad cold so i'm in one of thoes moods
Sent from my R800i using Tapatalk
AndroHero said:
Sorry dousan i have a bad cold so i'm in one of thoes moods
Sent from my R800i using Tapatalk
Click to expand...
Click to collapse
There must be a bug around manchester, im ill too
That isn't the reason i give vague answers though
Can you use the wireless tether when you root
I've been reading since 2 days ago. I'll follow all the instructions given from the guide.

[S-OFF] Possible!! how to?

hi, I have been reading a lot about S-OFF how to, but I've read too much & I'm kinda confused right now, can someone help me through if I can get S-OFF, & post me link for the thread I have to read & do exactly.
is it even possible yet?
if not, then what all those threads are talking about?
& if it helps, this's the one X I have
x.xx.707.x - Asia WWE (World Wide English)
No there is still no way to get S-Off on the HOX. The only way to install a custom rom is via HTCdev but then you'll lose the warranty.
duk3r said:
No there is still no way to get S-Off on the HOX. The only way to install a custom rom is via HTCdev but then you'll lose the warranty.
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Click to collapse
R U sure about HTCdev???? I'm not talking about bootloader off, I'm talking about S-OFF
mehras1991 said:
hi, I have been reading a lot about S-OFF how to, but I've read too much & I'm kinda confused right now, can someone help me through if I can get S-OFF, & post me link for the thread I have to read & do exactly.
Click to expand...
Click to collapse
If you read about S-Off on the correct forums (i.e related to One X) then you would know that its not possible yet.
mehras1991 said:
is it even possible yet?
if not, then what all those threads are talking about?
Click to expand...
Click to collapse
What threads ?? Read this and this to find out the current progress in obtaining S-OFF.
PhoenixFx said:
If you read about S-Off on the correct forums (i.e related to One X) then you would know that its not possible yet.
What threads ?? Read this and this to find out the current progress in obtaining S-OFF.
Click to expand...
Click to collapse
thanks,
so what flashing files on this thread does?
sory if I'm asking basic questions, I moved from motorola & I didn't have such problem on their devices
mehras1991 said:
thanks,
so what flashing files on this thread does?
sory if I'm asking basic questions, I moved from motorola & I didn't have such problem on their devices
Click to expand...
Click to collapse
Ignore that thread, don't flash the files. It's for people who know what they're doing. Like it says, bricking is possible.
Sent from my Nexus One using xda app-developers app
Ok. I am a noob and a little confused.
So, if I root, I get access to entire operating system files. This enables me to make a full back-up of my phone. Am I right in assuming that I can root without unlocking the bootloader?
If I unlock the bootloader, I am able to load another version of android made by Cynagenmod and others. Can I unlock the bootloader without root or when I unlock it from HTC Dev, it roots my phone automatically? Also, if I do not load any other ROM, will I still be able to get HTC updates?
Where in all this is S-off? I understand that while unlocking the bootloader, HTC Dev still has some locked parts of the OS which is inaccessible due to S-on, but when we root the phone, doesn't it provide access to the locked partitions/files?
Apologies for the basic questions, would appreciate all help.
akhileshp said:
Ok. I am a noob and a little confused.
So, if I root, I get access to entire operating system files. This enables me to make a full back-up of my phone. Am I right in assuming that I can root without unlocking the bootloader?
If I unlock the bootloader, I am able to load another version of android made by Cynagenmod and others. Can I unlock the bootloader without root or when I unlock it from HTC Dev, it roots my phone automatically? Also, if I do not load any other ROM, will I still be able to get HTC updates?
Where in all this is S-off? I understand that while unlocking the bootloader, HTC Dev still has some locked parts of the OS which is inaccessible due to S-on, but when we root the phone, doesn't it provide access to the locked partitions/files?
Apologies for the basic questions, would appreciate all help.
Click to expand...
Click to collapse
You can't root yet without unlocking bootloader. You can load other versions of Android (there is no official Cyanogenmod yet, but there are quite a few CM9 and AOKP builds in the dev sections). Unlocking via HTCdev does not auto-root. You can relock after unlocking to get official updates.
Rooting doesn't give us access to being able to write to these partitions. That's what we want from S-OFF.
ZrC said:
You can't root yet without unlocking bootloader. You can load other versions of Android (there is no official Cyanogenmod yet, but there are quite a few CM9 and AOKP builds in the dev sections). Unlocking via HTCdev does not auto-root. You can relock after unlocking to get official updates.
Rooting doesn't give us access to being able to write to these partitions. That's what we want from S-OFF.
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Thank you so much. Much appreciated.
So to confirm, I have to unlock the bootloader from HTC Dev first, then try the method at http://forum.xda-developers.com/showthread.php?t=1644167 to root. I may not want to load the other custom builds right now, I'm still waiting for the Jb/4.0.4 update and also my warranty to run out. In the meantime, figuring out what is what and how it works, although I doubt I will be able to wait out another 9 months.
akhileshp said:
Thank you so much. Much appreciated.
So to confirm, I have to unlock the bootloader from HTC Dev first, then try the method at http://forum.xda-developers.com/showthread.php?t=1644167 to root. I may not want to load the other custom builds right now, I'm still waiting for the Jb/4.0.4 update and also my warranty to run out. In the meantime, figuring out what is what and how it works, although I doubt I will be able to wait out another 9 months.
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Click to collapse
Firstly, HTCdev unlock will void the warranty, you can search other threads for this. Secondly, that thread is for the HTC One XL (Qualcomm Snapdragon LTE), which is a completely different model to the international HOX (Tegra 3), so you don't want to use that. Here's the correct thread: http://forum.xda-developers.com/showthread.php?t=1577671
HTCdev unlock also wipes your phone, so you might as well load up a new rom which is already rooted.
Also, if you do decide to HTCdev unlock, make sure you load a new recovery up.I recommend CWM recovery, here: http://forum.xda-developers.com/showthread.php?t=1594819
Immediately after you do that, take a backup from CWM recovery.
ZrC said:
Firstly, HTCdev unlock will void the warranty, you can search other threads for this. Secondly, that thread is for the HTC One XL (Qualcomm Snapdragon LTE), which is a completely different model to the international HOX (Tegra 3), so you don't want to use that.
HTCdev unlock also wipes your phone, so you might as well load up a new rom which is already rooted.
Click to expand...
Click to collapse
Yup, read about the void warranty bit. And I also noticed that the thread is headed for the One XL, however, it still does show up in the home page of the International One X.
And I get the point about the new ROM. Given I have no hw problems with my phone and i've had it since early april, i reckon I might unlock it this wknd and load up another rom. Thanks again.
akhileshp said:
Yup, read about the void warranty bit. And I also noticed that the thread is headed for the One XL, however, it still does show up in the home page of the International One X.
And I get the point about the new ROM. Given I have no hw problems with my phone and i've had it since early april, i reckon I might unlock it this wknd and load up another rom. Thanks again.
Click to expand...
Click to collapse
I edited my last post with some more helpful info.

Question on root and unlock bootloader

I am new to the nexus 7.
Can I root without unlocking the broader?
What is the side effect of unlocking the boot loader?
Is there existing method to root without installing customer recovery?
Thanks
macaumen said:
I am new to the nexus 7.
Can I root without unlocking the broader?
What is the side effect of unlocking the boot loader?
Is there existing method to root without installing customer recovery?
Thanks
Click to expand...
Click to collapse
There is currently no known way to root without unlocking the bootloader and using a custom recovery.
Unlocking the bootloader allows you more control over the tablet. Specifically to install custom recovery, ROMs, etc. Most of the benefits from an unlocked bootloader are things you do from a custom recovery, not through the bootloader itself. The only real negative 'side effects' are that you lose some of the safety benefits, since you can do dangerous things if you don't know what you are doing, and that it may void your warranty.
So, if want to root, I must unlock bootloader?
Well I still get ota with bootloader unlocked?
macaumen said:
So, if want to root, I must unlock bootloader?
Well I still get ota with bootloader unlocked?
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Click to collapse
1. Yes
2. Technically you can, but not recommend; just wait for the rooted stock and flash that.
teh roxxorz said:
1. Yes
2. Technically you can, but not recommend; just wait for the rooted stock and flash that.
Click to expand...
Click to collapse
Regarding your #2, there is no reason not to unlock the bootloader to get OTA updates. The only thing that breaks OTA is custom recovery.
phonic said:
Regarding your #2, there is no reason not to unlock the bootloader to get OTA updates. The only thing that breaks OTA is custom recovery.
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Click to collapse
Completely correct. I just said not to do it, cause he seems less experienced, and from my experience, they get freaked out afterwards trying to put it back on. So trying to save him a headache, lol.
I recommend staying stock unless you absolutely need a specific root required app.
Right now there isn't a reason for root access except titanium backup.
I do recommend, however, to go ahead and unlock. It will wipe your device including personal data, so might as well get that out of the way now before you risk losing something important.
You can easily flash a custom recovery and root anytime after that, but I would wait until knowledgeable devs figure out the device a little more first.
Sent from Nexus 7 FHD from XDA Premium HD
player911 said:
I recommend staying stock unless you absolutely need a specific root required app.
Right now there isn't a reason for root access except titanium backup.
I do recommend, however, to go ahead and unlock. It will wipe your device including personal data, so might as well get that out of the way now before you risk losing something important.
You can easily flash a custom recovery and root anytime after that, but I would wait until knowledgeable devs figure out the device a little more first.
Sent from Nexus 7 FHD from XDA Premium HD
Click to expand...
Click to collapse
I'm not sure why you would suggest people not to root now. You mentioned a very good reason to do so - Titanium Backup. Not only is it useful for backups in general, but it's also a lifesaver for copying apps and their data from one device, like someone's old N7, to their new N7.
While I would certainly agree that people should wait before flashing custom ROMs, kernels, hacks, etc., nothing is going to change with rooting your N7 today versus a week or month from now. All the pros and cons will still be the same.
phonic said:
I'm not sure why you would suggest people not to root now.
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Click to collapse
They guy doesn't need root. He also doesn't understand root. So his chances of softbricking are good, and then, instead of us trying to talk him out of rooting, we now have to talk him through how to fix it.... .. Can we count on you to provide this support since your are so OK with him rooting now?
tweaked said:
They guy doesn't need root. He also doesn't understand root. So his chances of softbricking are good, and then, instead of us trying to talk him out of rooting, we now have to talk him through how to fix it.... .. Can we count on your to provide this support since your are so OK with him rooting now?
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Click to collapse
Neither you nor I have any idea what he needs or doesn't. He hasn't said anything other than asking some basic questions about the process. There are numerous guides on here that walk people through rooting step by step. There are also a handful of people who have soft bricked their device and asked for and received help. And yes, I have assisted people with similar issues in the past. Everyone on this board has at one point in their lives screwed something up - that's how we learn.
In any case, my point was that there is no clear reason for him not to do it if he wants to. The device is pretty forgiving unless he kills the bootloader.

Noob question for TA backups and Root

Sorry if this is a dumb question. Can someone please explain what it means that Bravia in Album will no longer work if I unlock the bootloader? I've been reading through many resources and have seen some old and new reports that either make no sense or contradict one another. This is my first Sony device so I'm not used to having to backup a TA partition or anything like that. My goal is to have a fully functional rooted stock firmware. I'm mainly sticking with stock to preserve the camera app since I will use it the most. From the sound of it, It seems like I'll be breaking something by rooting my device. Is this the case? If so, what gets broken and is there a way to root the stock firmware otherwise?
Xentar712 said:
Sorry if this is a dumb question. Can someone please explain what it means that Bravia in Album will no longer work if I unlock the bootloader? I've been reading through many resources and have seen some old and new reports that either make no sense or contradict one another. This is my first Sony device so I'm not used to having to backup a TA partition or anything like that. My goal is to have a fully functional rooted stock firmware. I'm mainly sticking with stock to preserve the camera app since I will use it the most. From the sound of it, It seems like I'll be breaking something by rooting my device. Is this the case? If so, what gets broken and is there a way to root the stock firmware otherwise?
Click to expand...
Click to collapse
Rooting doesn't require unlocking bootloader. Unlocking bootloader is when you will need to start worrying about TA and DRM and such. Just root using this method and you won't need to worry about backing up TA first: http://forum.xda-developers.com/showthread.php?t=2784900
camaro is right, as long as the root exploit works (i.e. as long as the upstream aosp kernel bugfix isn't merged) an unlocked bootloader is only required to flash a different kernel.
Thanks guys, every thing worked great
camaro322hp said:
Rooting doesn't require unlocking bootloader. Unlocking bootloader is when you will need to start worrying about TA and DRM and such. Just root using this method and you won't need to worry about backing up TA first: http://forum.xda-developers.com/showthread.php?t=2784900
Click to expand...
Click to collapse
So I'm probably going to go the next step and unlock the bootloader soon. I'll do a TA backup before, for sure. Does unlocking the bootloader break any of the apps or services?
Xentar712 said:
So I'm probably going to go the next step and unlock the bootloader soon. I'll do a TA backup before, for sure. Does unlocking the bootloader break any of the apps or services?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2745704
Sent from my D5503
camaro322hp said:
http://forum.xda-developers.com/showthread.php?t=2745704
Sent from my D5503
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Click to collapse
Cool, thanks! So basically just the X-reality(Bravia engine) will be gone. Not sure if I need that so maybe I'll take a spin with it off for a few days and see if I like it still. I read somewhere that Netflix was broken from it but that report was old so I'm guessing it's fixed now.
Xentar712 said:
Cool, thanks! So basically just the X-reality(Bravia engine) will be gone. Not sure if I need that so maybe I'll take a spin with it off for a few days and see if I like it still. I read somewhere that Netflix was broken from it but that report was old so I'm guessing it's fixed now.
Click to expand...
Click to collapse
You may want to resurrect that old thread to see if anyone else has input. I never unlocked bootloader as the stock ROM rooted was sufficient for me, so I can't say for sure what gets lost.
Sent from my D5503

Should I install a Treble ROM?

Hi all. I got my 7x on Prime Day, and so far, I'm loving the phone. IMO, the EMUI 8.0 interface is fine. But I'm intrigued by the possibility of unlocking and installing a Treble ROM like Lineage. For someone who has dabbled in unlocking, rooting and installing custom ROMs (but is by no means an expert), my question is: is it worth it? Is it very difficult? How high is the probability of something going massively wrong? Are there good, clear, idiot-proof step-by-step instructions out there if starting from factory? And is the upgrade from EMUI really worth the effort? I will appreciate all advice.
JShan said:
Hi all. I got my 7x on Prime Day, and so far, I'm loving the phone. IMO, the EMUI 8.0 interface is fine. But I'm intrigued by the possibility of unlocking and installing a Treble ROM like Lineage. For someone who has dabbled in unlocking, rooting and installing custom ROMs (but is by no means an expert), my question is: is it worth it? Is it very difficult? How high is the probability of something going massively wrong? Are there good, clear, idiot-proof step-by-step instructions out there if starting from factory? And is the upgrade from EMUI really worth the effort? I will appreciate all advice.
Click to expand...
Click to collapse
it is not exactly "idiot-proof" because idiots will find a way to "f" anything up.
but all mods depend on you being able to unlock bootloader. And honor has decided to stop issuing unlock codes on July 29. So if you think you may want to flash any roms, make sure to get your code now.
mrmazak said:
it is not exactly "idiot-proof" because idiots will find a way to "f" anything up.
but all mods depend on you being able to unlock bootloader. And honor has decided to stop issuing unlock codes on July 29. So if you think you may want to flash any roms, make sure to get your code now.
Click to expand...
Click to collapse
Thanks for that. Forgive the ignorance, but do I need to root also to install a Treble ROM? I'm now a DirecTV Now subscriber, and their app will not work on rooted phones, and I've had trouble getting RootCloak to work. Any benefit to unlocking the bootloader, even if I do not flash another ROM?
JShan said:
Thanks for that. Forgive the ignorance, but do I need to root also to install a Treble ROM? I'm now a DirecTV Now subscriber, and their app will not work on rooted phones, and I've had trouble getting RootCloak to work. Any benefit to unlocking the bootloader, even if I do not flash another ROM?
Click to expand...
Click to collapse
well I am also direct tv now user. And I have been going back and forth with root and unroot, for serveral testing reasons. I had not tried to use the directv now app while rooted till now, after reading your post.
And can confirm the video play is stopped with error message about not working on rooted device.
Bummer.
No there is no need to root to use custom roms, But that does not mean the app will work though.
mrmazak said:
well I am also direct tv now user. And I have been going back and forth with root and unroot, for serveral testing reasons. I had not tried to use the directv now app while rooted till now, after reading your post.
And can confirm the video play is stopped with error message about not working on rooted device.
Bummer.
No there is no need to root to use custom roms, But that does not mean the app will work though.
Click to expand...
Click to collapse
Sorry to be the bearer of that bad news. I think what I'll probably do is get the unlock code from Huawei while I still can, and sit on it for future use, maybe in a year once I'm out of warranty. Maybe then there will be an Android P ROM that will be worth the effort to flash. Thanks for the advice.

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