The bootloader is started shortly after the device's basic checks and is responsible for loading the Android OS. It can be used to boot different rooms besides the stock firmware, if the bootloader is unlocked.

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1answer
239 views

where does default setting for Command Line Switches is set in kernel source code in android

My android device is quad-core . But during booting only 2 cores are up . CPU_HOTPLUG is enabled . In dumpstate i found : maxcpus=2 in command Line options. I wanted to make this maxcpus=4 . I have ...
0
votes
1answer
287 views

How to install ROM when bootloader is not unlocked?

Accidentally, on stock recovery, I selected wipe data/factory reset which could have uninstalled the ROM on it. So, now my mobile is showing company logo only. My mobile HTC Inspire A9192's ...
0
votes
0answers
708 views

Is there anyway to backup current ROM without unlocking bootloader/ installing clockworkmod recovery?

I'm trying to use ROM Manager app to backup the current ROM of my Xperia Z but it seems that cannot be done without unlocking the bootloader/ installing ClockWorkMod Recovery. Is there any ...
0
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0answers
221 views

Uboot image as android recovery image

Is it possible to write uboot image to the image where recovery image is located? My recovery image was hidden so I had a hard time locating what's it's partition : recovery partition does not seems ...
-1
votes
1answer
507 views

What is the method to debug Android kernel from booting in tablet?

I have to test a custom Android build on a tablet and I need to know the method to debug the Android kernel from booting in the tablet? The tablet has only a screen, 2 USB ports and an HDMI port.
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0answers
1k views

Auto boot when charger connected (for HTC Magic)

I want to let Android OS to boot automatically when the charger connected (for HTC Magic) without pressing power button I found this guide: Complete boot when charging If your phone only gets one ...
0
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0answers
233 views

What can I load from Android system recovery <3e>?

TL;DR: Can you load an OS image or new bootloader or anything useful from the recovery menu's "apply update from external storage" option? My 10" Toshiba Thrive AT100 stopped working a while ago. ...
3
votes
2answers
9k views

How to know whether my Xperia Ray's bootloader is locked or unlocked one

Title says all, but again a bit background I would like to know whether the bootloader on my xperia ray is locked or unlocked one. I bought it from ebay & with seller warranty (or you can say no ...
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vote
1answer
856 views

What does unlocking the bootloader do?

My understanding is that a boot loader is like a BIOS in a PC, which will help a device to load the OS correctly. When I unlock the bootloader in an Android device, does this modify the complete ...
3
votes
1answer
32k views

How to and from where install ClockworkMod Recovery (CWM) on GT-P1000?

Currently I am trying to upgrade my Android OS from 2.3.3 to Cyanogenmod 9 not with "Odin" but via the bootloader and SD-card. Now I had a problem with "Signature verification failed" described here ...
0
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0answers
39 views

Problems Unlocking Bootloader Of Atrix 4G

I wanted to try out CM7 and was following the instructions on this page: http://wiki.cyanogenmod.org/w/Install_CM_for_olympus . The bootloader unlocking process failed according to RSDLite and now I ...
2
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0answers
1k views

Installing Android using only fastboot on HTC Vision

I lost my system somehow. My phone turned off and reboots during starting up. I'm only able to go to hboot (fastboot/recovery etc.) on my phone, and I'm unable to run Android system. I have tried ...
4
votes
1answer
3k views

Can I lock the Nexus 4/7 bootloader after flashing a non-stock ROM?

I know that doing a fastboot oem unlock will both unlock the bootloader and wipe the data on the device. Unfortunately, while this allows me to install a non-stock ROM like Cyanogenmod, my ...
5
votes
1answer
4k views

what is a bootloader unlocked phone?

What is a bootloader unlocked phone? How we can make use of it while creating or flashing ROMs? What are advantages of unlocked bootloaders over locked bootloaders? Why does not any OEM generally ...
0
votes
1answer
873 views

How to flash phone, if it stucks in bootloop

My phone gets stucked in a bootloop if I start it. The last thing I did was changing the fonts. I replaced droidsans by Segoe ui. Well I already deleted the cm10.zip on the phone and now can't flash ...
2
votes
2answers
540 views

Will bootloader unlocking provide access to all the apps in the Play Store?

My flyer doesn't allow few apps to be installed from the Play Store as it shows "This app is not compatible with your device" and this incompatibility is not due to OS. If I get the apk of this app ...
0
votes
1answer
495 views

Can I get back to root-able HBoot version by doing a factory reset

I have a HTC Wildfire (Buzz) that originally came with Eclair. I now have Froyo on it and the Unrevoked tool doesn't work as the HBoot version is not supported (too new for Unrevoked). At this point, ...
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1answer
87 views

Is it possible to s-off without wiping out phone memory? [closed]

Is it? I don't want to wipe out my apps.
4
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1answer
5k views

What is S-OFF? Why would I want to do it?

I always root my android devices, but there's something called obtaining S-OFF for certain devices, and I have no idea what that means. What exactly does the term S-OFF relate to? Why would I want ...
2
votes
1answer
636 views

Does a nandroid backup contain the hboot?

If I restore a nandroid backup will it restore the hboot and the corresponding partition tables? I'm on bravo-stock hboot now and I want to try the CM7 hboot. Will I be able to switch back to stock ...
2
votes
1answer
11k views

Upgrading hboot fails: signature verify fail

My Goal http://forum.xda-developers.com/showthread.php?t=1762790 Putting jelly bean on nexus one My Problem Upgrading hboot I'm just following everything step by step (link) $ fastboot flash ...
19
votes
2answers
6k views

Why does unlocking the bootloader wipe phone?

I understand that unlocking the bootloader will wipe my Android phone, but have been looking around for why. Seems to be by design, but what is the reasoning for that design? Is it some security ...
1
vote
1answer
400 views

Is the setting OFF/ON of the security flag different from enabling/disabling of fastboot?

I am following the book XDA Developers Android Hackers Toolkit 2012. In the beginning chapters , it says that : The second-stage bootloader checks to see if the security flag is on (S-ON) or off ...
4
votes
1answer
7k views

fastboot not working on my Nexus 4

I'm trying to root my N4, and fastboot doesn't seem to work. Running it on linux, and the fastboot binary seems to run. 'Fastboot devices' produces info on my device, but 'fastboot oem unlock' just ...
0
votes
1answer
168 views

Atrix 4G update via OTA with unlocked bootloader?

I am running 4.5.91 currently on a rooted and unlocked Atrix. Will I brick my phone by updating to 4.5.141 from OTA source? Can I re-lock the boot-loader if that is the issue?
2
votes
1answer
898 views

How can I go back to ICS after JB OTA updates?

My phone is HTC One S VelliC2 and received the JB OTA updates. However, I could not get used to it. So how can I return to ICS? Can I use the HTC Android 4.03 RUU file? Now the Hboot version has ...
3
votes
2answers
5k views

Device always boots in recovery mode, but apparently there is no recovery partition

We have a BSNL Penta IS709c (cheapest tablet currently available / Oct 2012) running Android 4.0. Feeling adventurous, I issued reboot recovery through adb and the device tried to reboot in recovery ...
1
vote
1answer
624 views

How to Install our android image in laptop ? How to make android boot-able image for laptop?

I have Android Source Code image and i want to install it on Laptop . I want to know how we made bootable image for laptop with android image. What I have to do so that laptop detect the android ...
6
votes
3answers
1k views

Strange (unfamilar screen) on my Galaxy Tab?

I have a Galaxy Tab 10.1. It was powered off and charging when my nephew picked it up and turned in on. When he handed it to me on the screen was a graphic of an open box, the android logo with the ...
1
vote
1answer
348 views

Flashed my phone without rooting and now it doesn't work

I have an international Samsung Galaxy SIII i.e. GT-I9300. Few days after the official upgrade to v4.1, it started freezing. So I removed the battery and inserted again and it did not boot and was ...
5
votes
1answer
9k views

Problem with unlocking the HTC Wildfire bootloader with HTC unlocker

I tried to unlock HTC bootloader by the official tool but I get to the stage when I issue the command: fastboot oem get_identifier_token Unfortunatly I get error ... (bootloader) [ERR] Command ...
1
vote
1answer
3k views

What exactly are DRM keys?

I was thinking of unlocking my ST17i's bootloader but I saw on the Sony Mobile website that unlocking the bootloader will result to the deletion of DRM keys from my phone. What exactly are they? And ...
3
votes
2answers
6k views

Is there currently an easy way to root Sony Xperia S with stock ICS 4.0.4 ROM?

I'm looking for an easy way, which doesn't need Unlocking bootloader or flashing Roms, just like root solution for SE 2011 devices (one click). It's because I currently use my Xperia S for development ...
0
votes
1answer
6k views

Android debugging-Boot Loops: Is there any way to get a log of information without ADB? Can the emulator even help? [duplicate]

Possible Duplicate: Android boot-up messages for debugging? Related to this post I created: Does the Android emulator generate some sort of log file I can access if it crashes? I have ...
1
vote
0answers
337 views

Extract boot.img issues

I have been having a lot of trouble trying to extract a boot.img. Its one of Samsung's with the funky headers so none of the scripts work. I tried HEX editing it so it is a gzip (1f 8b 08) and ...
3
votes
1answer
2k views

Xperia play bootloader locked?

Hi guys i've been trying for quite a while to unlock the bootloader of the phone i've bought. It's from hong kong and branded to vodafone it's not sim locked as I tried an optus sim and it worked. I ...
0
votes
1answer
381 views

Unlocked bootloader, encryption

galaxy nexus unlocked bootloader no adb enabled rooted device encryption on with 10+ characters (Cryptfs Password - Google play) PIN screen lock with 6 characters Am I safe if someone wants to ...
1
vote
0answers
1k views

Flash Nexus 7 without USB Debugging

My Nexus 7 32gb WiFi, running stock 4.2.1, is stuck on the Nexus 'X' symbol loading screen after boot. It stays there until the battery goes flat. The issue is that I have not enabled developer or ...
8
votes
1answer
407 views

What happens to the battery during bootloader/recovery?

I want to know what happens to the battery (does it charge/discharge/stay constant?) when the device is in bootloader or recovery mode. In both of these modes, a USB may or may not be connected. If ...
13
votes
4answers
361 views

Is it possible to get multi-user support on Android with help from the boot manager?

I know that a common problem with Android tablets is that they lack multi-user support. I wonder if there isn't already a solution that allows me to select the user on boot by linking/moving/changing ...
2
votes
1answer
3k views

Where is the code for the Bootloader stored in an Android phone?

Where is the bootloader program on an Android phone stored ?
1
vote
1answer
7k views

Android boot-up messages for debugging?

I am trying to figure out if Android (i.e. Galaxy Nexus, Nexus S, and/or Motorola Xoom) come with some sort of capability to produce a "boot-up" log. (kind of like Linux boot-up screen) It would be ...
0
votes
1answer
557 views

HTC ONE X: Rooting and boot loader [duplicate]

Possible Duplicate: How to root the new version of the ONE X How to root HTC ONE X from AT&T? What exactly does rooting a phone mean? What is the boot loader? Is installing boot ...
3
votes
0answers
69 views

Is there a way to tell if a boot loader can be unlocked before purchase?

For example are boot loaders unlockable only if the phone is branded and comes with a contract? If I bought a phone of Amazon.com would I likely be able to unlock the boot loader or is it really just ...
0
votes
1answer
1k views

How to get setting information before booting Android devices like in BIOS?

Is there any method by which we could get the system information before booting android OS. Like wise in PC/laptop, we can get into BIOS setting before booting and get the system information. Do ...
3
votes
2answers
3k views

Alternative ways to factory reset?

My Android 2.3 system my PMP3384 tablet somehow crashed so seriously that I cannot even do a factory hard reset, because I cannot get to settings, only the following message appears again and again: ...
0
votes
0answers
13 views

Asus Eee Pc with android 4.0 doesn't show internal disk in file system [duplicate]

Possible Duplicate: Internal hard disk partitions (sda2) not showing in android system Hi i have Asus EeePc with android 4.0 operating system . There is about 250 GB of total space (seen in ...
1
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0answers
247 views

How can I see bootloader stdout debugging messages?

I'm trying to understand the mechanisms of the Android bootloader. The source code for this is here: ...
0
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0answers
173 views

Is it possible to load only an .apk file on boot?

It is possible to override a step in the boot process (after all underlying dependencies have been met) to load an .apk file automatically? The optimal solution would be without something such as ...
3
votes
1answer
257 views

remove apps with htc bootloader unlocked

Will just unlocking the bootloader per HTC website allow me to remove apps like Blockbuster, Nova, etc on an EVO 4G?