SM-G850F OEM Unlock toggle hidden - General Questions and Answers

I was recently trying to root my Samsung Galaxy Alpha (and it is the first time I root a device), and as I plugged the phone into the computer it doesn't recognize. At first I thought of the drivers, so I went on google and searched for usb and adb/fastboot drivers, but it still didn't recognized. I took a look at the rooting guide I was following, and I saw that it said to turn on OEM Unlock, but I saw that the toggle wasn't there. I searched here on XDA Forums, and even on Google but I didn't find anything. If anyone had this issue or knows how to solve it please respond ASAP.

Is the phone connected to the internet? Sometimes that brings up the OEM unlock toggle in the developer options. There's a related article for the Galaxy S8 and S9 which might be relevant to your situation: https://www.xda-developers.com/fix-...y-s9-samsung-galaxy-s8-samsung-galaxy-note-8/
If using a Windows computer, you should be able to install Samsung Galaxy drivers. Enable USB debugging on your phone and you should be able to use adb commands in a terminal. Odin software is needed for performing tasks while the phone is in 'Download' mode.
adb can be installed on your computer by searching for ' platform-tools '

Related

[Q] Unlocking Bootloader Using SDK and ADB

I'm wondering if anyone has run into this problem before?
I'm trying to unlock the bootloader on my friend's Photon Q, I downloaded the SDK and installed the Motorola drivers. But when I put his phone into Fastboot mode, the "fastboot oem get_unlock_data" command does not work and CMD just says waiting for devices.
Yes I'm shift+right clicking on the platform-tools folder in the SDK to run the Command Prompt and I did download the correct Fastboot file. The command "adb devices" shows nothing when his phone is plugged in, but it shows my own phone (A Motorola Droid Bionic) when it's plugged into the USB cable. RSD Lite also recognizes both phones when powered on or in Fastboot mode.
I have no idea what to do at this point, we just need to get that unlock data to plug into the Moto site. Would it be possible to use someone else's unlock key or is each one randomized individually for the device? Or would that even work because my computer can't do the command for the unlock data, so maybe it couldn't push the unlock key onto the phone?
quick thought: did you enable usb debugging on the device?
edit: i guess that wouldn't make any difference in fastboot mode...
anyway, yeah, i'm pretty sure each device has it's own unique code. it's odd that fastboot recognizes the device, but the command isn't working. i bet you will get it somehow tho. a similar thing actually does happen to me sometimes, and in my case, it is because my usb ports are going bad and the computer loses connection with the phone.
Man nobody has anything eh? That's a crying shame. I tried using a different computer and went through the same course and still nothing.
I did try USB debugging on and off on both machines, didn't change a thing.
In order for the drivers (and therefore adb) to pick up the phone, I needed usb debugging *and* the phone not to be in charge only mode. Maybe that will help?
If not, when you reboot to fastboot and connect the cable, look at the devices installing list (if win 7) or device manager, and confirm the pc sees the fastboot device. If not you may need to reinstall the driver. Strange I know, but I needed to after getting my unlock data, holding off on unlocking due to the warranty voiding note, then trying again a couple days later where it wouldn't recognize. Seems to be finicky drivers to match a finicky device. But I do love this keyboard lol...
Sent from my XT897 using Tapatalk 2
We've only ever tried it in MTP mode and USB debugging enabled. This is day three of plugging it in and pulling it out and still no go. This is a royal pain, that is for sure.
Download Motorola Device Manager from the website, install, plug in phone. Place the phone into mass storage mode WITHOUT debugging enabled, then other modes, then back into bootloader mode then into fastboot mode. This will install EVERY driver, I didn't see that as one of the things tried.
Once you are in those modes, Android ADB device driver will install.
Hope that helps...
Sent from my XT897 using xda premium

[Completed] Save data from broken Nexus 4; no root; no USB debbuging

Hello,
my problem is that I´ve got a Nexus 4 Smartfon and the sceen is broken, so I´m not able to enter my pattern. because of this I also am not able to save my data because without entering the pattern, my computer doesn´t alowe the access to the memory.
I tried two different ways to get access to memory by using ADB:
1) I tried to delet the pattern (gesture.key) file.
I tride this first with my rooted Samsung Galaxy S3 mini and it worked perfectly. it also has USB debugging turnt on.
But my Nexus 4 hasn´t USB debugging turn on. I tried in on my S3 mini with and without and without USB debbuging it also didn´t work out.
Also my Nexus 4 isn´t even recognized as an ADB device, only in sideload mode or fastboot mode. I also think this is because of the not turnt on USB debbuging.
2)i tried to turn on the USB debbuging, so my device will be detected as an ADB device, or i can you a programm to mirror my smartphone on my computer and insert the pattern via computer.
I´ve found a pretty good tutorial on the internet but this didn´t work out. Also on my S3 mini it did´t work
So my last idea is, to us a little programm/application which i can transfer via sideload to my device and which will delete the pattern on the phone. my problem is that I´m not a programmer so I can´t do this myself.
so i would like to ask what do you think about my idea, if you could help me or do you have any other suggestions what i can do to save my data.
i´m ver thankful for any help :good:
Kaktus! :angel:
Kaktus621311 said:
Hello,
my problem is that I´ve got a Nexus 4 Smartfon and the sceen is broken, so I´m not able to enter my pattern. because of this I also am not able to save my data because without entering the pattern, my computer doesn´t alowe the access to the memory.
I tried two different ways to get access to memory by using ADB:
1) I tried to delet the pattern (gesture.key) file.
I tride this first with my rooted Samsung Galaxy S3 mini and it worked perfectly. it also has USB debugging turnt on.
But my Nexus 4 hasn´t USB debugging turn on. I tried in on my S3 mini with and without and without USB debbuging it also didn´t work out.
Also my Nexus 4 isn´t even recognized as an ADB device, only in sideload mode or fastboot mode. I also think this is because of the not turnt on USB debbuging.
2)i tried to turn on the USB debbuging, so my device will be detected as an ADB device, or i can you a programm to mirror my smartphone on my computer and insert the pattern via computer.
I´ve found a pretty good tutorial on the internet but this didn´t work out. Also on my S3 mini it did´t work
So my last idea is, to us a little programm/application which i can transfer via sideload to my device and which will delete the pattern on the phone. my problem is that I´m not a programmer so I can´t do this myself.
so i would like to ask what do you think about my idea, if you could help me or do you have any other suggestions what i can do to save my data.
i´m ver thankful for any help :good:
Kaktus! :angel:
Click to expand...
Click to collapse
Hello,
Try one of the methods stated here https://forum.xda-developers.com/showthread.php?t=2620456
Regards
Vatsal,
Forum Moderator.

"Unkown device" on bootloader mode for both J4+ and J4 core

I turned USB debugging and OEM on, installed ADB drivers on my computer and plugged my J4 core (J410F). The "adb devices" command shows that my device is recognized by ADB, and I can reach my files problemless. But when I reboot into bootloader (adb reboot-bootloader) My device appears to be "unknown device". It's literally same problem in this thread: https://forum.xda-developers.com/showthread.php?t=2182437
To summarize: Adb recognized my device, can command my device, PC also recognized my device, can explore the files, but fastboot and Odin can't.
I also tried it with J4+, same problem occured. Tried to use another computer and swapped from windows 10 to windows 7, same problem occured. Dealing with this problem for 3 days, I'm about to give up.
My both devices are Turkey versions. Could that be the problem? , is something is broken on Turkish kernels?
I want to be able to use bootloader so I can root my device or be able to recover it when neccessary. Since some other users had same problem, it might be an universal problem, and since both devices are Turkish variations, it might be the problem of Samsung Developers, so primarily to the Samsung developers, after all developers, I'm asking for your help.
anonimazu said:
I turned USB debugging and OEM on, installed ADB drivers on my computer and plugged my J4 core (J410F). The "adb devices" command shows that my device is recognized by ADB, and I can reach my files problemless. But when I reboot into bootloader (adb reboot-bootloader) My device appears to be "unknown device". It's literally same problem in this thread: https://forum.xda-developers.com/showthread.php?t=2182437
To summarize: Adb recognized my device, can command my device, PC also recognized my device, can explore the files, but fastboot and Odin can't.
I also tried it with J4+, same problem occured. Tried to use another computer and swapped from windows 10 to windows 7, same problem occured. Dealing with this problem for 3 days, I'm about to give up.
My both devices are Turkey versions. Could that be the problem? , is something is broken on Turkish kernels?
I want to be able to use bootloader so I can root my device or be able to recover it when neccessary. Since some other users had same problem, it might be an universal problem, and since both devices are Turkish variations, it might be the problem of Samsung Developers, so primarily to the Samsung developers, after all developers, I'm asking for your help.
Click to expand...
Click to collapse
Not sure what you expected?
ADB requires the adb binary to be run at boot via the kernel ramdisk.
Neither FASTBOOT(which isn't supported on Samsung devices) nor ODIN(download mode) run the kernel.
In short ADB does not function in download mode.

No ABD devices found Samsung A9 2018 SM-A920F

I rooted my Samsung A9 2018 SM-A920F, but now i have problems with smalipatcher to mock gps. I installed Java, but an error occurs. NO ABD devices found. I tried it with platform tools, in device manager i tried to update drivers, but keeps saying best drivers are installed, but the phone is still not recognised. OEM debug and OEM unlock is on, tried to revoke oem debug as well, but smalipatcher still cant find phone. Tried different cables as well. Someone that can help me?
Add Samsung A9 2018 SM-A920F to this thread's title thus mainly owners of such device get addressed.
Lucvdkant said:
I rooted my Samsung A9 2018 SM-A920F, but now i have problems with smalipatcher to mock gps. I installed Java, but an error occurs. NO ABD devices found. I tried it with platform tools, in device manager i tried to update drivers, but keeps saying best drivers are installed, but the phone is still not recognised. OEM debug and OEM unlock is on, tried to revoke oem debug as well, but smalipatcher still cant find phone. Tried different cables as well. Someone that can help me?
Click to expand...
Click to collapse
What does
Code:
adb devices
return?
jwoegerbauer said:
What does
Code:
adb devices
return?
Click to expand...
Click to collapse
Nothing. Gives no number. I rebooted my usb drivers as well. When I connect the usb and check device manager it adds Samsung Android Phone en when i open it gives Samsung Android ADB interface. My phone does not pop up as Samsung A9 but as MTP-USB-device
Lucvdkant said:
Nothing. Gives no number. I rebooted my usb drivers as well. When I connect the usb and check device manager it adds Samsung Android Phone en when i open it gives Samsung Android ADB interface. My phone does not pop up as Samsung A9 but as MTP-USB-device
Click to expand...
Click to collapse
You have to switch phone's USB mode to ADB.
jwoegerbauer said:
You have to switch phone's USB mode to ADB.
Click to expand...
Click to collapse
OEM unlocking and USB debugging are on, I put default usb configuration on Transferring files. Is that what you Megan? How do I put it on ADB?
Lucvdkant said:
OEM unlocking and USB debugging are on, I put default usb configuration on Transferring files. Is that what you Megan? How do I put it on ADB?
Click to expand...
Click to collapse
Your phone is configured to connect to phone via USB in Media Transfer Protocol (MTP) mode what is for transfering files.
As already said you have to configure phone that it connects via USB in Android Debug Bridge (ADB) mode.
IDK how you can achieve this because I don't have a phone as yours.
Follow my advice given in post #2
jwoegerbauer said:
Your phone is configured to connect to phone via USB in Media Transfer Protocol (MTP) mode what is for transfering files.
As already said you have to configure phone that it connects via USB in Android Debug Bridge (ADB) mode.
IDK how you can achieve this because I don't have a phone as yours.
Follow my advice given in post #2
Click to expand...
Click to collapse
Thanks, My device is not found in platform tools using the adb devices command, but it's on OEM unlock and USB Debugging is on. I added the phone in the tiltle, hope someone had an solution for my problem. Don't understand why it's not working. When I connect phone without the USB debugging it get's recognised, but with debugging mode on, nothing to find
Lucvdkant said:
Thanks, My device is not found in platform tools using the adb devices command, but it's on OEM unlock and USB Debugging is on. I added the phone in the tiltle, hope someone had an solution for my problem. Don't understand why it's not working. When I connect phone without the USB debugging it get's recognised, but with debugging mode on, nothing to find
Click to expand...
Click to collapse
Enabling OEM Unlock and/or USB Debugging simply sets an allowance flag, nothing else. It doesn't configure phone's USB mode.
I tried it on the laptop from work and there the phone is recognized in adb. But sadly I don't have administrator rights on that laptop to open Smalipatcher. Is there an alternative or work around available?

Question Device not connecting at all in bootloader

Hey guys,
I am Currently attempting to unlock the bootloader on my Pixel 6a, but when I attempt to connect via fastboot in the bootloader my PC shows nothing connected? I can push commands through ADB while the device is booted and have full functionality, but as soon as I reboot the device into the bootloader I lose connection to my PC. OEM Unlocking is enabled in the settings and I have toyed with updating it to the latest update and factory resetting the device. It shows correctly in device manager as 'Pixel 6a' while USB Debugging is disabled and as 'android composite ADB interface' while it is enabled.
To clarify as I am sure many have seen this issue before I do not believe it do be a driver issue as the device will not show up at all in device manager, not even showing with the incorrect driver (No ding to indicate a device has been connected). I have tried using 2 different USB C -> A cables in all slots of two entirely seperate PC's (Both running Windows 10). When I enter fastboot with OEM Unlocking disabled it acts no different to when it is enabled.
I appreciate any help or insight any of you folks can give me.
Device is currently running Android 13 Build number TQ2A.230505.002 if you need anymore info please let me know.
The OEM Unlocking toggle does not affect whether USB function works. It is only a "safety" that allows unlocking the bootloader.
Have you ensured you've installed the correct drivers? Google USB Drivers
I have spent a long time looking at drivers, but I have no device to install the drivers to as the connection drops out once I eneter the bootloader. I have used Zadig in the past to install the correct drivers for devices but when I reconnect the device while I have it open it cannot even detect a new device being connected to the PC. (Also no audible tone which would be heard even with incorrect drivers) I actually only recently used Zadig to install the correct WinUSB drivers for my S10e in which I connected it to my PC in download mode (Queue audible ding) and used Zadig to overwrite the incorrect driver with the correct one. It's almost as if the device will not communicate while it is in Bootloader mode?
I assume you have checked with the 'fastboot devices' command to see if your device is connected when in fastboot mode?

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