I want to root my phone with Magisk, so, following the instructions here:
I enabled OEM unlocking on my SM-A516B (European, not US or Canada and it's running the latest offical software (Android 12)) and rebooted to download mode via adb (goes to a "fastboot" mode when I select bootloader mode from recovery mode), but I don't see any option to unlock the bootloader. The English text on the screen says only:
Code:
Downloading...
Do not turn off target
Do not disconnect the USB cable during the software update!
Volume Down Key + Side key for more than 7 secs
:Cancel (restart phone)
There is also some Korean text, a DID code and a barcode. Holding volume up does nothing.
I'd seriously appreciate any ideas on how to proceed!
So I found the solution for myself: I don't want to go to the download mode, but instead hold valume + and - and plug in a USB cable.
Related
Dear all,
[Update 1/1/2013]
- I've just found that my tab cannot boot after restart to download mode, recovery mode. Everywhen I try to do that, it will do nothing (display nothing, cannot charge, cannot hard shutdown....). Even I try to boot download mode by adb or Power + vol down, the result is nothing. However, when I shutdown and then press and hold Power button 3 section, it will boot to android normally.
My P6800 have problem I haven't met before:
IT CAN:
- run normally. But, when turn on device, I have to try press the power button sometime and wait about 2 to 3 mins (normally, it has to on right after press power)
- In off state, it could be charge normally when I plugin the cable (I see the battery progress bar)
IT CANNOT:
- Factory reset, update firmware: when I try to factory reset or update firmware (by OTA),after It turn off, it never turn on (don't display anything). Until I try to hard turn off (hold power). Then, no thing change.
- Enter download mode: Turn off device, and try to hold "Power+volume up" or "Power+volume down". But screen still dark.
I think there is some problem with the download or recovery mode. But I dont know to fix it.
I've got a Galaxy Tab 7.7 (WIFI/3G) P6800 from my brother. And he talk that He had flashing wrong fimrware (flash firmware of other model) 1 time.
This device hasnt root yet.
I need your help to fix this issue and able to flash stock or custom rom.
Thank you.
try to enter those mode via adb... so you need to have adb on your pc. so download this files and extract it to C:\adb
http://www.mediafire.com/?u84ejv5u5k49opx
with your device usb debugging mode is on. connect it to pc.
enter command prompt in windows (start menu ---> run --> type cmd and enter)
on command prompt you need to type.
cd c:\adb
adb reboot download (if want to go to download mode)
adb reboot recovery (if want to enter recovery mode)
btw... did the current device have root?
This device hasnt root yet. I'll try your suggest and let you know result.
Thanks.
[Update 1/1/2013]
- I've just found that my tab cannot boot after restart to download mode, recovery mode. Everywhen I try to do that, it will do nothing (display nothing, cannot charge, cannot hard shutdown....). Even I try to boot download mode by adb or Power + vol down, the result is nothing. However, when I shutdown and then press and hold Power button 3 section, it will boot to android normally.
Switch Off Your Device & Connect It To The Computer Using USB Cable While Enabling Fast Boot Mode (Press & Hold Volume Up Button To Trigger Fastboot Mode). Windows Will Start Driver Installation As soon As You’ll Connect Your Device To The Computer While Keeping It In Fastboot Mode.
When I get that part I get into fastboot, there is about 5 seconds and then immediately goes out, someone help me please
Trying to enter fastboot mode via the hardware keys, is there a special trick to this??. I use:
Hold volume up and Power keys together for 3 seconds and then release.
Nothing happens, just boots up normally. Any suggestions?
1. If phone is in off state, Power button + Volume down key till the screen lights up to enter FB.
2. If phone is restarting, just press volume down key till phone screen lights up to enter FB.
3. While powered on and connected to PC and Developer Options/USB debugging enabled, open command prompt and type ADB reboot fastboot.
1. Turn off your phone.
2. Press volume down + power button at same time.
OR
1. Turn on USB DEBUGGING + OEM UNLOCKING from Developer mode.
2. Install ADB drivers in your computer.
3. Type command in adb shell adb reboot bootloader
* By both methods you will enter bootloader mode.
Yesterday I sideloaded the Android 12 Dev Preview 3 on my Google Pixel 3A. Enabled Developer options (did NOT! enable OEM unlocking, this wan't an instruction) and ADB. Sideloaded the file via Recovery.
Sideloading went fine, Stage 1 > Stage 2. Finished succesfull. Reboot device > Nothing.
'Can't find valid operating system. The device will not start.' Visit g.co/abh etc. (not very helpfull).
I can get in to fastboot. Devices state = Locked (ADB instructions didn't tell me to select this in developer options).
Can't boot into recovery, resque mode is also broken. Cannot use flash.android.com or pixelrepair.withgoogle.com. In my Country (Netherlands) the Phone isn't for sale officialy (only via grey import). My phone is from Germany. Can't get any Support from google or RMA it.
Any commands for flashing via fastboot are not allowed since flashing is not unlocked (it's stated above but i'll mention it again).
Softbricked and can't do anything. This is very sad.
Any tips?
Reading my own notes I would try to unlock the bootloader
- Hold power to reboot
- Press power to pause
- Hold volume-up + power to enter bootloader mode
If you can enter fastboot mode, try unlocking
fastboot devices
Should list a device...
fastboot flashing unlock
You will then have to use the phone to select yes to the unlock. you use the volume keys to select and the power button to confirm.
mulperi said:
Reading my own notes I would try to unlock the bootloader
- Hold power to reboot
- Press power to pause
- Hold volume-up + power to enter bootloader mode
If you can enter fastboot mode, try unlocking
fastboot devices
Should list a device...
fastboot flashing unlock
You will then have to use the phone to select yes to the unlock. you use the volume keys to select and the power button to confirm.
Click to expand...
Click to collapse
Ofc. thats what I tried first thing. Problem is there is no OS to boot into and to enable OEM unlock. That's also the reason pixel repair tool and flash.android.com do not work. Currently in contact with Google Netherlands to arrange an RMA. (The pixel phones aren't available in the Store here, so it's kind off a pain in the ass).
I have a Samsung A51 with MDM lock & passcode lock. Andriod Version 10.
Device cannot enter download mode, cannot reboot to bootloader, cannot factory reset also.
How do I remove the MDM lock on this device, or is there a way I can force this device to download mode?
To force download mode:
Power device off completely with no cables connected
Plug a USB cable into your PC, do not yet connect your phone
Hold both Volume + and - buttons, do NOT press Power, and while holding them plug in the USB cable
Device should start with a prompt, follow the instructions to enter download mode