So for a factory reset of my tablet, I simply booted it into recovery mode. But it shows an Android bot lying with a red exclamation mark. After spending hours, I found a shortcut i.e., Vol + and Power to access the recovery menu. But my tablet doesn't go to the recovery menu even when I pressed the keys.

So I simply connected my tablet to my PC via USB and installed drivers. In adb command prompt, I typed adb devices. Now my tablet is listed as 20110301 recovery. I can simply use only adb pull, adb push, and reboot commands. But I can't access adb shell to unlock my tablet. it simply says exec '/system/bin/sh' failed: No such file or directory (2).


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On stock recoveries, the ADB utility only registers that the device is connected when you invoke the sideload utility which gives an error when you try applying adb shell or any other thing. It only accepts push commands to the device. ADB also works when your phone is on, which is a problem when you have boot issues and can only get to recovery.

Hi guys I am setting up an android system for a company, one of the requirements is that "employees can't factory reset/ wipe out data of a device". I have already done the proper implementations on the OS itself. however I was looking throught the recovery.img and boot.img files to see if I could modify any xml file or anything to hide or set password auth for the factory reset and wipe options from the recovery. I know a guy with knowledge would be able to activate it back, however the average employee barely knows what recovery is, so it's really unlikely.

Now I want a code that will reboot the device into recovery mode. The application will be only for Samsung Galaxy S. I didn't found any code for reboot in recovery, is there any way to reboot in recovery via code?

Is there any way that I could alter the recovery mode on my Android phone using Ubuntu? I'm wondering because my rooted LG Spirit H422 phone crashed when I tried to convert KingRoot to SuperSU, and I can't boot into recovery mode. After it crashed only the LG logo is appearing, so I tried factory reset, but it doesn't work. Now I can't open recovery mode, even by pressing Volume Down+power buttons. How to recover it in Ubuntu?

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 payment, although they specified it could be found (the same version) for free on their website. So naturally, I went and downloaded it as soon as I could.

But instead of a .zip file, as things that I usually flash, it is an .img file. This made sense, since I figured I wouldn't be installing a new recovery through the current recovery version, but I am unknowing as to how to install this new recovery image.

One way is to open ROM Manager and choose "Flash ClockworkMod Recovery". Select your device when it prompts and wait for it to download the latest (non-touch) recovery. Using a file browser, go to /sdcard/clockworkmod/download//recoveries and paste your .img there. may be mirror.kanged.net or something else, just check the folders till you find an IMG file with the current date. Rename the existing .img to something else and rename yours to the exact same name as the existing file was named. For example, rename recovery.clockwork-3.0.0.0-evo.img to bak.img and then name your file recovery.clockwork-3.0.0.0-evo.img. Then return to ROM Manager and flash the recovery normally.

Recovery mode will allow you to reboot your system and get a fresh start without any viruses or other issues that were potentially causing you trouble. Discover how to use recovery mode for various devices, including Samsung and LG.

To fully grasp the role the Android boot and recovery images play, we first need to understand the general boot-up process of an Android phone. While embedded software is no longer part of my day-to-day work at TextNow, I used to wear the embedded-engineer hat in one of my previous jobs and I dabble with embedded electronics in my spare time, so I am intimately familiar with modern microprocessor boot-up routines. I must caution you that this is a very technical post, but one that is hopefully useful to somebody looking for a reference material on how this all fits together, with links to where to delve more in-depth if required. This type of post would have been very useful when I was learning it :)

Technically speaking, there are no structuraldifferences between boot and recovery images. The only difference is whichkernel and which initial ramdisk is loaded, but they are packaged the same. Wewill come back to how these are packaged to make a neat and tidy boot image.

So, since we have custom recovery and boot imagesfor our Android phones (such as TWRP, CWM, etc.), obviously, someone had tocreate their own recovery image or modify an already existing boot image. Mostof the work was done using the already open-sourced Google Android code, butthere only was code there to create a boot image from its components. There wasno tool to unpack a boot image for modification. Now, you can use a tool like topack and unpack boot images and change out the kernel, or modify the initialramdisk.

Just experienced a similar circumstance. Had set up a private file in photos on my Android Pix 2. Chose CClean and the option for free up space came up. W/O reading the fine print I hit enter. The files were permanently deleted and there is no apparent recovery option. The files are NOT in the Trash file. No app I downloaded was capable of finding the data/videos including Recuva (a ccleaner product). Seems to me that this issue would have come any number of times by any number of subscribers/users and Piriform would add a - STOP, before you continue -- statement !!!!


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When running recovery image from debuggable builds (i.e. -eng or -userdebug build variants, or ro.debuggable=1 in /prop.default), adbd service is enabled and started by default, which allows adb communication. A device should be listed under adb devices, either in recovery or sideload state.

Although /system/bin/adbd is built from the same code base as the one in the normal boot, only a subset of adb commands are meaningful under recovery, such as adb root, adb shell, adb push, adb pull etc. Since Android Q, adb shell no longer requires manually mounting /system from recovery menu.

By default, adbd is always included into recovery image, as /system/bin/adbd. init starts adbd service automatically only in debuggable builds. This behavior is controlled by the recovery specific /init.rc, whose source code is at bootable/recovery/etc/init.rc.

bootable/recovery/etc/init.rc disables Android USB gadget (via sysfs) as part of the fs action trigger, and will only re-enable it in debuggable builds (the on property rule will always run after on fs).

The recovery image supports localization of several background texts, e.g. installing, error, factory reset warnings, etc. For devices using xxhdpi and xxxhdpi, the build system generates these localization images dynamically since android-10 when building the recovery image. While the static images under res-*dpi/images/ is used for other display resolutions and as a backup.

After you finish your recovery, you might notice that your personal Microsoft account verification codes in the Authenticator app are different between your old and new phones. The codes are different because each device has its own unique credential, but both are valid and work while signing in using their respective phones.

If you've already set up accounts in the Authenticator app, the app won't be able to recover your backed-up accounts. Preventing recovery helps ensure that your account details aren't overwritten with out-of-date information. In this situation, you must remove any existing account information from the existing accounts set up in your Authenticator app before you can recover your backup.

All major manufacturers work with us to ensure that our data recovery methods meet manufacturer standards and many refer their customers to us, including Samsung, HTC, LG, Google, Sony, Motorola, ZTE, Huawei, Asus, Acer and more.

DriveSavers data recovery engineers have extensive experience performing data retrieval on flash memory devices that have suffered common and catastrophic data loss and can recover data from any Android device that has failed electronically or is physically damaged.

TWRP will be overwritten with the AOSP standard recovery in the process. Of course, you can reinstall TWRP once the OS upgrade has succeeded, but from my memory that will mean that the next (and final) update will renew your original problem and force you to go the manual way again.

I tried to log in on the Android app with a fingerprint recently. It worked before, but the fingerprint touch sensor didn't prompt this time, so I needed to type in the master password that I forgot. I tried to recover it from "Forgot Master Password" (I haven't set up a password hint). However, I got an error message "Account recovery is not set for this email" after I entered my email. It's weird because I have used the account recovery function on the app before. How can I reset my Master Password now?? I don't set up one-time passwords either.

I have managed to create a new master password using the account recovery with fingerprint in an Android mobile phone. However, when I try to log in into my vault, it says I should verify my password and try again. I have typed several times, but nothing happens. Anyone could help with some tips. Thank you!

I reviewed your account and see that you successfully used account recovery, but after that, I only see failed sign-in attempts which means the new master password is not matching. Entering credentials through a touch keyboard can be tricky, I recommend:

After an update, I got a freeze a few times, tried to fix it and ended up screwing up the console - before there were freezes, but it was playable. Now after the screen with the "atgames" logo, this screen appears in the attachment, I tried all the menu options, nothing worked. I tried to use "adb" and "android tool 2.69", but I don't know what to do. I think that only someone with more knowledge can help with this software problem, perhaps copying the original files of another model to my console. I'm sorry to sell the damaged atari. 006ab0faaa

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