Android's recovery mode allows ROM flashing even if the device is currently unusable. Invoking it usually involves a key combination that is pressed when starting the device. These combinations differ from device to device.

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23
votes
3answers
21k views

Will a Custom Recovery work with an encrypted device?

I wanted to know whether using Android's built-in encryption (introduced in 3.0) would affect my ability to use a custom recovery (Clockwork Mod in my case). More specifically if I will still be able ...
15
votes
1answer
17k views

Manually switch from ART to Dalvik

I wanted to try out the new ART runtime, but didn't realize my custom ROM doesn't support it. So now I am getting recurring Force Closed messages after booting, and can't get through to the settings ...
12
votes
2answers
2k views

Why is custom recovery a prerequisite for flashing a custom ROM?

I have read in many guides that before flashing, we need to have a custom recovery like CWM installed. I am not able to understand why is this a prerequisite for flashing a custom ROM. Can I flash a ...
10
votes
2answers
82k views

Flash boot.img without using fastboot USB

So I've recently rooted my phone and tried a ROM or two. I find it really handy that you can use TWRP recovery to install another ROM from the SD card, you don't need to have it connected to a PC. ...
10
votes
1answer
9k views

What are the differences between ClockworkMod and Team Win Recovery for the Nexus 7?

My Nexus 7 is running on 4.2.1 and has the latest build version. According to the Nexus 7 Root Toolkit, it is giving me an option to flash one of the following recovery menus: CWM Touch TWRP Touch ...
9
votes
2answers
45k views

How to install new Recovery image from .img file

I recently found that I could upgrade to the new CWM touch recovery version for my EVO 4g! However, to do this through the ROM manager app or get it directly onto the phone at all, it required a ...
9
votes
4answers
82k views

Galaxy S GT-I9000: how to fix boot to recovery with Volume up+Power?

I have Samsung Galaxy S (GT-I9000) and I've installed Cyanogenmod 10 M2. I can reboot into recovery from Cyanogenmod (Hold Power button, select Reboot and Recovery). However, I cannot boot directly to ...
9
votes
1answer
18k views

Why isn't Clockworkmod Recovery “Sticking”?

I've tried multiple times to flash ClockworkMod recovery onto my unlocked Galaxy Nexus (LTE\CDMA variant "toro" build) device. Each time I can boot into recovery and ClockworkMod displays. However, if ...
9
votes
2answers
3k views

Why can't I boot into recovery mode?

I think I'm actually missing something here still. Everything I read suggests I need to boot into recovery mode as a first step, and that I ought to be able to do that by holding down the "home" key ...
8
votes
1answer
15k views

Enter recovery mode from command line

Does anyone know if there's a way to get an Android phone to reboot into recovery mode, from the Android command line? Note: I do NOT have adb access. I do NOT know the magic power-on sequence to ...
8
votes
4answers
26k views

How to delete backups made using Clockworkmod?

Splitting this question from the comments to my answer to How to install ClockworkMOD Recovery on Sony Xperia Neo V (MT11a)? Erik, one last thing. I accidentally made an extra backup which didn't ...
8
votes
1answer
834 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 ...
7
votes
5answers
3k views

Can one avoid losing everything on a Galaxy Nexus when applying a new ROM (safely)?

The makers of most ROMs suggest that you do a full device wipe when moving from one ROM to another. I have also found this is usually good practice, so data from the previous ROM does not affect the ...
7
votes
0answers
23k views

Can't mount sdcard from Recovery Mode/Clockworkmod [duplicate]

Possible Duplicate: Why can I not access the cyanogenmod zip on my sd card? I'm trying to install a custom ROM on my rooted Galaxy S2, I've been following this guide: ...
6
votes
1answer
20k views

Difference between installing SuperSU using Play Store versus a custom recovery that installs it from a file?

I see that some rooting guides say that rooting involves: Download a SuperSU as a zip file that would be accessible to the phone (e.g. the sdcard). Unlock the phone's bootloader. Booting into a ...
6
votes
3answers
27k views

Windows doesn't recognize Nexus 7 in recovery mode

So I have the Nexus 7 (2012). When the tablet is on and USB debugging is enabled, ADB recognizes it. But when I shut it off and put it into recovery mode, then press power and volume up to sideload, ...
6
votes
2answers
55k views

Failed upgrade, now stuck in recovery mode

My Galaxy Note is stuck in recovery mode and I'm not sure what to do next. Here's what happened: After connecting to wifi, a software update was downloaded and a message asked me to install it. I ...
5
votes
3answers
7k views

what does “flash recovery” mean?

In the instructions for ClockworkMod Recovery for Galaxy S i9000, there is: Step 2. Flash Recovery. I don't understand what this means. Which recovery to flash? How to do this? (With a USB ...
5
votes
2answers
15k views

Fix permission option removed from CWM recovery 6.0.3.6

I updated to latest ClockWorkMode recovery in my Galaxy S 3(AT&T,d2att). New version is 6.0.3.6. And noticed that Fix Permission option is removed from it. I used that option when flasing ROMs. I ...
5
votes
2answers
6k views

Galaxy S not responsive after an aborted firmware update

I just bought this Samsung Galaxy S, installed the Kies software, then it automatically downloaded an update for my phone. I plugged in my phone and it began the update. After a few seconds the ...
5
votes
1answer
187 views

Recover Android system with TWRP Recovery

I tried installing an unofficial version of Cyanogenmod I found on XDA Developers that supports kltemini (SM-G800F). However, I messed up somewhere in the installation, and got a message on TWRP ...
5
votes
1answer
1k views

Installed Galaxy S3 ROM on Galaxy S2

I installed a ROM meant for Galaxy S3 on my Galaxy S2 phone by mistake and now the phone won't boot. I can get into Download Mode fine but I can't get to Recovery Mode because the ROM installed a S3 ...
5
votes
4answers
2k views

Wi-Fi cannot turn on! Accidentally deleted /etc/wifi folder

i was trying to enable ad hoc network connection on android and overwriting below folders /etc/wifi /etc/dhcpcd and now my wifi could not turn on. The phone is ADINNO R8, a custom build phone.I ...
4
votes
2answers
64k views

How to enable USB Debugging in Android if forgotten pattern for screen-unlock?

I want to use some third party software to clear my device's screen unlock pattern which I forgot. They require USB debugging enabled but I don't have it enabled in my Android. How do I turn on USB ...
4
votes
1answer
14k views

Installing TWRP over CWM

in order to upgrade my encrypted cyanogenmod installation i need to use the TWRP recovery instead of the CWM. i have already tried multiple ways to flash TWRP recovery including ROM Manager but it ...
4
votes
2answers
69k views

How to hard reset of a Samsung Galaxy GT-I9000 which I cannot put in recovery mode?

I don't have much hope. Here is what's happening Galaxy S GT-I9000 keeps crashing at startup : com.sec.android.provider.logprovider crashes and other ones android.process.acore So I cannot reach ...
4
votes
3answers
15k views

Cyanogenmod custom recovery can't backup, restore or apply an update!

I just installed Cyanogenmod. It's my understanding Cyanogenmod is a ROM so I was bit suprised when my TWRP custom recovery was replaced by Cyanogenmod's own recovery. Why is this? Cyanogenmod's ...
4
votes
1answer
53k views

How to check if your bootloader is unlocked

I'm about to flash a custom recovery, but I'm not sure if my bootloader is unlocked or not (phone is rooted, but I did it a while ago, so I can't remember the process I went with), and I don't want to ...
4
votes
1answer
5k views

Shell script to reboot into recovery and install zip

Okay, without getting too deep into details, I'm looking to automate the installation of a flashable zip (must be flashed from recovery). For now, I can use the command "reboot recovery" in a shell ...
4
votes
1answer
6k views

How can I get ClockworkMod Recovery to properly use /sdcard on an encrypted Galaxy Nexus?

I have a Galaxy Nexus (toro) device. It's flashed with the latest touch ClockworkMod recovery image, along with a milestone snapshot of CyanogenMod 11. Now, when I try to pick a zip file to flash ...
4
votes
1answer
15k views

What is the difference between Fastboot and HBoot mode?

and why can't I see an option to boot into recovery mode on my HTC Hero (Orange UK)? Is it already in recovery mode when I can see the Fastboot/HBoot menu? Initial menu after holding vol-down when ...
4
votes
2answers
5k views

Power button not working. Phone wont boot?

I have a Samsung Galaxy Ace GTS 5830i. I somehow messed up the power button of my phone and now after the battery drained completely, It will not start. I tried looking up online for going into ...
4
votes
1answer
4k views

SGS doesn't go to download, recovery mode nor does it connect via USB after installing a battery MOD

I installed some app called "Galaxy s battery icon mod 2" on my rooted Samsung Galaxy S (with a lagfix OCLF), it required rebooting my handset. Then, it didn't boot up, my handset entered an infinite ...
4
votes
1answer
7k views

Backup using ADB without root or usb debugging

I have a Nexus S (on android 4, not rooted) device who's not able to boot. It opens and get stucks to the X screen. I can only access the recovery mode. I tried to backup data via ADB, but the phone ...
4
votes
2answers
309 views

Not able to flash/factory reset Galaxy Nexus.; restores to one particular backup every reboot

My Galaxy Nexus will not factory reset. I tried to flash many images. I deleted the gallery contacts, but it restores to a restore point on each reboot. Currently, it is having "yakju-jzo54k". I am ...
4
votes
0answers
50 views

Can I find out when a rom or recovery was installed?

I have purchased a totally new phone (G2) and when I got it, it was already with a custom ROM with SU and a clockwork recovery. I have a receipt from the purchase with date and time. I need to be able ...
4
votes
2answers
10k views

Extract boot.img

I have pulled boot.img from my phone's CWM backup. How do I extract it? I tried split_bootimg.pl. But throws an error - Android Magic not found in boot.img. Giving up.
3
votes
4answers
9k views

how to add a custom lock for the recovery and/or bootloader?

Unlocking the bootloader and/or the recovery is very popular discussion across many devices. But doing so exposes a very obvious and inevitable issue with security! An unlocked recovery means that no ...
3
votes
1answer
1k views

Relationship between a recovery and a ROM

As far as I understand: Recoveries (e.g. ClockworkMod) can be used, among other things, to install new versions of the Android OS, like custom ROMs (e.g. CyanogenMod) by updating the ROM section which ...
3
votes
3answers
15k views

How to flash a custom recovery with heimdall (without touching the main system)?

The first recommended step in the installation of CyanogenMod on Samsung Galaxy S is flashing a custom recovery like ClockworkMod or the one from Replicant with a command like: heimdall flash ...
3
votes
5answers
17k views

How do I enter recovery mode on my Motorola Milestone 2 to unbrick it?

I own a Motorola Milestone 2, also called A953 (apparently this is different from the Droid 2 Global). It used to have Android 2.3 with Motoblur middleware. It was bought independently from any phone ...
3
votes
1answer
111 views

Would a full back up (from recovery) preserve all data including installed apps?

I wonder if I create a full back up from recovery, would it preserve all my data? Including installed apps (along with their configs) and my contacts?
3
votes
2answers
14k views

HTC software update causes phone to reboot in the TWRP recovery mode and does not update. How to fix it?

I just rooted my HTC One (M7) according to LINK. It is s-on, and TWRP (teamwin) recovery is flashed.Rooting is successful and everything seems fine. Except: When I go in the "setting, about, update ...
3
votes
1answer
4k views

Possible to do Nandroid Backup BEFORE unlocking bootloader?

I have a stock Atrix 4G with Froyo (2.2.2) (Version.4.1.83.MB860.ATT.en.US). It's past warranty, so I'm not worried about voiding the warranty. As one would expect, the stock recovery doesn't offer ...
3
votes
4answers
19k views

can't use adb shell in recovery mode

I have a china tablet named Quest. I have accidentally repeated pattern lock more than 5 times. Now I have also forgotten the email address. So for a factory-reset of my tablet I simply booted it ...
3
votes
1answer
5k views

I can FastBoot my device. How can I reinstall an Android image to it?

I accidentally deleted a file from my phone (Sky iVega IM-A800s, Gingerbread) and phone cannot boot now. I'm seeing an "System operating error" and device restarts repeatedly. I could get into ...
3
votes
2answers
1k views

Recovery boot not working properly - cannot select items

I am working towards installing CM7 on my HTC Incredible and have hit a snag. When using 'Reboot into Recovery' from ROM Manager v4.3.3.0 the phone reboots into Recovery, but the menus do not function ...
3
votes
1answer
797 views

Read logs from recovery

I want to read logs of Android device having stucked at boot logo,I don't have adb access,So is it possible to read logs displayed by logcat in recovery by mounting /system/ partition ?
3
votes
2answers
16k views

FastBoot recovery failed: partition 'recovery' not support flash

My mobile is Lenovo S920 running official Android OS 4.4.2. I am trying to install cwm recovery through fastboot. I tried executing the command fastboot flash recovery recovery.img But I am ...
3
votes
3answers
16k views

Booting into recovery from terminal

How can I boot into the recovery from terminal? I'm using LG p970/CM10/cwm5