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for questions on the bootloader, which is kind of "BIOS mode" on Android devices

4 votes

Where is Boot flow screen displayed in android

This is all happen in OEM bootloader (proprietary) before android is started. This screen is displayed before splash screen only in yellow/orange/red state …
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0 votes
Accepted

My phone is not entering fastboot mode

Oppo F11 has non-unlockable bootloader, fastboot is disabled intentionally. You can root with bootless-root method only, but carefully read instructions especially respect all warnings …
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4 votes
Accepted

Cannot Unlock Bootloader on Fairphone 4

is fastboot in userspace, what you want is the "real" fastboot also called bootloader. Either select "Reboot to bootloader" in fastbootd or reboot the phone with fastboot reboot bootloader. …
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2 votes

Bootloop issue and can't go to recovery mode

The Asus Zenfone Flash Tool is no official Software, furthermore it looks like this tool is using fastboot (which usually works on previously unlocked bootloader only) for fastboot.exe download platform-tools … and open cmd.exe. navigate to platform-tools folder with cd now you can type fastboot reboot if bootloader is already unlocked, you can also wipe cache partition and see if this fixes your boot problem …
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0 votes

Boot from SD or external hardware device?

You always have to modify boot.img, so the answer is no. If you considering to edit boot.img and manage to mount the external disk to /system, you should mount another partition to /data too. There ar …
alecxs's user avatar
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0 votes
Accepted

Is it possible to update from Android 4.2 to 4.4 without disturbing the bootloader?

KitKat has introduced SELinux therefore you can't just update by changing out some system apps and/or libraries. Nevertheless, while this is a broad statement you may succeed for updating single apk f …
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1 vote

Recover data, photo, & video from a dead water-damaged Android phone

assume you are running windows, I will give you short instructions how to read data off dead device in EDL mode with QFIL disconnect battery from phone mainboard, press vol up + vol dn and connect usb …
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1 vote
Accepted

How to access the download mode of a device with a outdated bootloader?

SM-A405FN with Exynos chipset? I am not aware of any emergency download mode. Let battery drain for few days. Press and keep holding both Volume buttons when plug in charger. If you still can't reach …
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3 votes
Accepted

Can't get SM-900 to be accessible with fastboot on Linux

Due the age of that device it is very likely that it was shipped with unlocked bootloader (except for Verizon branding) that's why there is no OEM unlocking in Developer Options. … Samsung devices have replaced Fastboot mode with its own bootloader mode, often called Odin mode or Download mode. …
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2 votes

Does the bootloader reset after removing the battery?

First your recovery got corrupted during flash interrupt. Then you booted into recovery accidentially, which made device crash. It stucked in crashed state and did not react to buttons, until battery …
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1 vote

how to re-install TWRP from Linux?

variant does allow backup/restore recovery. in this case you can just rename the twrp.img into recovery.emmc.win, place it into empty backup folder TWRP/BACKUPS/*/recovery and restore backup Note: Your bootloader … must remain unlocked as long as TWRP (or any other modified partition) is installed. re-locking bootloader is only recommended after you flashed full stock ROM including stock recovery. …
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0 votes
Accepted

How to unlock the bootloader of Samsung galaxy grand 2?

this device is not bootloader locked …
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0 votes

Is it possible to dump the internal storage of an unrooted, boot-looping Android 9 with lock...

What all Samsung devices have in common, download mode (fastboot) has been replaced with proprietary Odin protocol. Benjamin Dobell (author of Heimdall) has reverse engineered Odin Software, or at lea …
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