I have a stock 2012 Nexus 7 Wifi + 3G which (was) on 4.4.4. The power button does not work in the bootloader or when booted up, but I can use it to reset the phone and boot into the bootloader.
I had the bright idea of using the Wugs Toolkit to reflash the factory ROM to see if that would correct the problem. Unfortunately, the bootloader was still locked.... it formatted the partitions but then couldn't write anything back, so now it will only boot into the bootloader. I can't unlock the bootloader because you have to confirm you want to unlock it by pressing the power button, which doesn't work.
Is there any way I can unlock the bootloader without having to do that power button press to confirm it?
Thanks
Ian
How "lock" or "relock" my samsung SM-T510 bootloader?
im getting annoyed by the message when it boots
I would like to know how to do this as well after flashing stock firmware in Odin, the option to toggle off OEM unlocking is grayed out. Any help would be awesome!
dcillusions77 said:
I would like to know how to do this as well after flashing stock firmware in Odin, the option to toggle off OEM unlocking is grayed out. Any help would be awesome!
Click to expand...
Click to collapse
You can't choose the OEM lock until you re-lock the bootloader. You do that the same way you unlocked it. But be warned, it does a factory reset also, which means you have to go through the whole setup proceedure again. BTW, it is unlocking the bootloader that causes the message, not the OEM lock. Also, do you know that you don't have to wait for that message to disappear on it own. If you tap the power button when it appears, it goes away without the delay.
lewmur said:
You can't choose the OEM lock until you re-lock the bootloader. You do that the same way you unlocked it. But be warned, it does a factory reset also, which means you have to go through the whole setup proceedure again. BTW, it is unlocking the bootloader that causes the message, not the OEM lock. Also, do you know that you don't have to wait for that message to disappear on it own. If you tap the power button when it appears, it goes away without the delay.
Click to expand...
Click to collapse
The OEM lock is grayed out. I have factory reset everything. Through Odin and device. I just want the bootloader locked again and reversing this procedure does not work. Not worried about erasing the device I've already downloaded the 2 to 3 hour 2.3GB file I pushed through Odin
dcillusions77 said:
The OEM lock is grayed out. I have factory reset everything. Through Odin and device. I just want the bootloader locked again and reversing this procedure does not work. Not worried about erasing the device I've already downloaded the 2 to 3 hour 2.3GB file I pushed through Odin
Click to expand...
Click to collapse
Did you actually read my post. OEM and bootloader locks are two entirely different things. When you first unlocked your tablet, there were two steps involved. FIRST, you had to enable developer mode and turn on OEM enable. THEN, you had to unlock the bootloader by holding the proper buttons when powering up. To relock, you have to do that in reverse. First relock the bootloader,using the same buttons you did to unlock, and then, and only then, you can disable OEM. And the second step is optional. You don't have to disable OEM to get rid of the message.
Edit: And "reversing the procedure" does work if you do it right. It is the ONLY way to relock the bootloader and I have done it. So I know it works.
reedit: OK, I just did it again on my T510. Turn the tablet off. Plug the cable into the PC but NOT the tablet. Hold both the vol up and down buttons and then plugin the cable from the PC. When the green screen appears, release the buttons and then press and hold the vol up till the next screen appears. IT WORKS!
lewmur said:
Did you actually read my post. OEM and bootloader locks are two entirely different things. When you first unlocked your tablet, there were two steps involved. FIRST, you had to enable developer mode and turn on OEM enable. THEN, you had to unlock the bootloader by holding the proper buttons when powering up. To relock, you have to do that in reverse. First relock the bootloader,using the same buttons you did to unlock, and then, and only then, you can disable OEM. And the second step is optional. You don't have to disable OEM to get red of the message.
Click to expand...
Click to collapse
What proper buttons are you talking about? You mean in download/fastboot mode? I'll look at the da** thing again when I get home. Bout done with this samscra* sh**
dcillusions77 said:
What proper buttons are you talking about? You mean in download/fastboot mode? I'll look at the da** thing again when I get home. Bout done with this samscra* sh**
Click to expand...
Click to collapse
No I do NOT mean download/fastboot mode. Go back and research how to UNLOCK the bootloader. IT DOES NOT USE FASTBOOT. You DO NOT use fastboot to unlock Samsung devices. And "factory reset" via Odin is meaningless. You don't use Odin to unlock the bootloader either. BTW, Samsung and most other reputable tablet makers, intentionally make it hard to unlock their devices because it is a serious security risk if you don't know what you are doing. Do you know what you are doing?
lewmur said:
No I do NOT mean download/fastboot mode. Go back and research how to UNLOCK the bootloader. IT DOES NOT USE FASTBOOT. You DO NOT use fastboot to unlock Samsung devices. And "factory reset" via Odin is meaningless. You don't use Odin to unlock the bootloader either. BTW, Samsung and most other reputable tablet makers, intentionally make it hard to unlock their devices because it is a serious security risk if you don't know what you are doing. Do you know what you are doing?
Click to expand...
Click to collapse
I actually do know what I am doing as a matter of fact. I rooted all of our devices in this household including friends and family. Some of them are in my signature. You don't have to be a dbag about someone asking for help. Yes, I read your posts too, even after all your edits. I got it finally so I guess thanks for all of your generous replies to point me in the right direction. Have a nice day!
dcillusions77 said:
I actually do know what I am doing as a matter of fact. I rooted all of our devices in this household including friends and family. Some of them are in my signature. You don't have to be a dbag about someone asking for help. Yes, I read your posts too, even after all your edits. I got it finally so I guess thanks for all of your generous replies to point me in the right direction. Have a nice day!
Click to expand...
Click to collapse
I apologise for getting snappy but I was starting to get frustrated trying to point out that the OEM lock wasn't the problem and that the "buttons" did work.
Thanks Lewmur
Just wanted to pop on and say thanks lewmur, I was getting sick of not being able to update and singe I bought a Galaxy S9+ I cant root that, might as well keep them both stock and use "altered" apk install files. I was not sure if it was possible to relock the bootloader, now I know lol, so thanks.
I have a TAB S6 running Android 10. Bootloader is unlocked and OEM switch IS NOT grayed out. I went into DL mode and all I saw was the same thing as when I unlocked the TAB in the first place. Anything special I need to do to re-lock this baby.
jhill110 said:
I have a TAB S6 running Android 10. Bootloader is unlocked and OEM switch IS NOT grayed out. I went into DL mode and all I saw was the same thing as when I unlocked the TAB in the first place. Anything special I need to do to re-lock this baby.
Click to expand...
Click to collapse
relock and install full stock firmware
elliwigy said:
relock and install full stock firmware
Click to expand...
Click to collapse
Got the install firmware but How exactly do you re-lock the bootloader?
EDIT:
Got it!
Long Press!
lewmur said:
Did you actually read my post. OEM and bootloader locks are two entirely different things. When you first unlocked your tablet, there were two steps involved. FIRST, you had to enable developer mode and turn on OEM enable. THEN, you had to unlock the bootloader by holding the proper buttons when powering up. To relock, you have to do that in reverse. First relock the bootloader,using the same buttons you did to unlock, and then, and only then, you can disable OEM. And the second step is optional. You don't have to disable OEM to get rid of the message.
Edit: And "reversing the procedure" does work if you do it right. It is the ONLY way to relock the bootloader and I have done it. So I know it works.
reedit: OK, I just did it again on my T510. Turn the tablet off. Plug the cable into the PC but NOT the tablet. Hold both the vol up and down buttons and then plugin the cable from the PC. When the green screen appears, release the buttons and then press and hold the vol up till the next screen appears. IT WORKS!
Click to expand...
Click to collapse
...Like you said, your instructions do work! But i think folk are getting confused in your last sentence...
..."When the green screen appears, release the buttons and then press and hold the vol up till the next screen appears. IT WORKS!"
with the term " 'hold' the vol up" you use - instead of 'Long Press' the middle Volume button option on the screen!
This method by Long Pressing Volume Up button will get you to the three options screen which asks if you want to lock your Tab...
klantee said:
Long Press!
...Like you said, your instructions do work! But i think folk are getting confused in your last sentence...
..."When the green screen appears, release the buttons and then press and hold the vol up till the next screen appears. IT WORKS!"
with the term " 'hold' the vol up" you use - instead of 'Long Press' the middle Volume button option on the screen!
This method by Long Pressing Volume Up button will get you to the three options screen which asks if you want to lock your Tab...
Click to expand...
Click to collapse
thanks it work perfect
lewmur said:
Did you actually read my post. OEM and bootloader locks are two entirely different things. When you first unlocked your tablet, there were two steps involved. FIRST, you had to enable developer mode and turn on OEM enable. THEN, you had to unlock the bootloader by holding the proper buttons when powering up. To relock, you have to do that in reverse. First relock the bootloader,using the same buttons you did to unlock, and then, and only then, you can disable OEM. And the second step is optional. You don't have to disable OEM to get rid of the message.
Edit: And "reversing the procedure" does work if you do it right. It is the ONLY way to relock the bootloader and I have done it. So I know it works.
reedit: OK, I just did it again on my T510. Turn the tablet off. Plug the cable into the PC but NOT the tablet. Hold both the vol up and down buttons and then plugin the cable from the PC. When the green screen appears, release the buttons and then press and hold the vol up till the next screen appears. IT WORKS!
Click to expand...
Click to collapse
This works for SM-T870 as well FOLLOW BOLD TEXT of above, just did it. Stupid easy THANK YOU SO MUCH LewMur
so I have a Samsung galaxy A205U and some people say its possible to do root and unlock BL and twrp burt and some say its not but if someone could help with this please let me know I am currently trying to do this with odin because I don't know if it has a locked BL or not so any help would be appreciated ,Thanks!:good:
christianh10506 said:
so I have a Samsung galaxy A205U and some people say its possible to do root and unlock BL and twrp burt and some say its not but if someone could help with this please let me know I am currently trying to do this with odin because I don't know if it has a locked BL or not so any help would be appreciated ,Thanks!:good:
Click to expand...
Click to collapse
Sorry, the 205U cannot be rooted.
https://forum.xda-developers.com/galaxy-a20/how-to/root-samsung-galaxy-a20-rooting-guide-t3954872
Brah its so easy to unlock oem!
I'm so shocked and surprised that you guys haven't figured out how to unlock bootloader. Aren't you guys like the smartest computer wizards alive? Anywho... Ok kid this is how you unlock oem and will allow you to install any os you want.
Step one: power off your phone.
Step two: when you power off your phone and at the moment that your screen turns black press down and hold:
Step 3: Press both volume buttons at the same time, then after you feel the phone vibrate one time immediately...
"without lifting your fingers off of the two volume buttons" press and hold the power button.
Step 4: As you continue to hold down all three buttons at the same time.
The phone will vibrate, then it will take you to a green screen that states that installing a new operating system will erase your data, or void your warranty, or something like that.
Step 5: press the Volume Up Key to accept the consequences.
When you restart the phone will download an update which will allow oem unlock option to appear in Developer Mode Options.
Step 6
Go to about phone, then scroll down to Software Information, then click on Build Number 7 times. Go back to Settings and scroll all the way to the bottom and access developer options. Then scroll down until you see oem unlock. Check for notification of the update finishing.
Do all of this by the way with the phone connected to your computer. There's like a couple of tutorials online that you can find on youtube and on Library.
TADA! It worked for me just fine; ya sheee?!
Jaybitzleguan said:
I'm so shocked and surprised that you guys haven't figured out how to unlock bootloader. Aren't you guys like the smartest computer wizards alive? Anywho... Ok kid this is how you unlock oem and will allow you to install any os you want.
Step one: power off your phone.
Step two: when you power off your phone and at the moment that your screen turns black press down and hold:
Step 3: Press both volume buttons at the same time, then after you feel the phone vibrate one time immediately...
"without lifting your fingers off of the two volume buttons" press and hold the power button.
Step 4: As you continue to hold down all three buttons at the same time.
The phone will vibrate, then it will take you to a green screen that states that installing a new operating system will erase your data, or void your warranty, or something like that.
Step 5: press the Volume Up Key to accept the consequences.
When you restart the phone will download an update which will allow oem unlock option to appear in Developer Mode Options.
Step 6
Go to about phone, then scroll down to Software Information, then click on Build Number 7 times. Go back to Settings and scroll all the way to the bottom and access developer options. Then scroll down until you see oem unlock. Check for notification of the update finishing.
Do all of this by the way with the phone connected to your computer. There's like a couple of tutorials online that you can find on youtube and on Library.
TADA! It worked for me just fine; ya sheee?!
Click to expand...
Click to collapse
What you have done does NOT root the phone
You obviously have not read this section.
The 205U cannot be rooted
You can only install official updates
look here
https://forum.xda-developers.com/galaxy-a20/how-to/android-10-q-guide-a20-t4095589
Disregarding official methods of rooting your phone, is there any way of manually or forcibly patching or modifying the bootloader without permissions given by the manufacturer? Such as doing so by an outside terminal on a computer.
I understand the risks of bricking a phone device.
Techipit said:
Disregarding official methods of rooting your phone, is there any way of manually or forcibly patching or modifying the bootloader without permissions given by the manufacturer? Such as doing so by an outside terminal on a computer.
I understand the risks of bricking a phone device.
Click to expand...
Click to collapse
Not for the A205U
Most others of A205xx can be rooted
christianh10506 said:
so I have a Samsung galaxy A205U and some people say its possible to do root and unlock BL and twrp burt and some say its not but if someone could help with this please let me know I am currently trying to do this with odin because I don't know if it has a locked BL or not so any help would be appreciated ,Thanks!:good:
Click to expand...
Click to collapse
It's a 50/50 chance for rooting. Samsung may remove the rmm lock on the a20 series once our 2 year update period is over.
Or it may be like the Verizon samsung galaxy S4 which has still never been fully rooted.
ninjasinabag said:
It's a 50/50 chance for rooting. Samsung may remove the rmm lock on the a20 series once our 2 year update period is over.
Or it may be like the Verizon samsung galaxy S4 which has still never been fully rooted.
Click to expand...
Click to collapse
Let's hope its the former
physwizz said:
Let's hope its the former
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Click to collapse
Yeah. If not, we may get lucky with 11 anyway, google was talking about user signed gsi images being flashed through standard recovery, but I haven't heard much about it in a while.
I still have 5 months of warranty. I have a Xperia Z3 plus and I have backed up the TA partition keys so I can relock the bootloader if I have to. Is there anything like that for the M30s ?
It's the same process you used to unknown it
Press volume up and down and plug the USB cable in. When the option menu comes up long press volume up
Derealjessejames said:
It's the same process you used to unknown it
Press volume up and down and plug the USB cable in. When the option menu comes up long press volume up
Click to expand...
Click to collapse
I still haven't unlocked it yet, just making sure if we can revert to locked state. But will I lose my warranty after unlocking the bootloader ? If yes, then relocking the bootloader will be no use ?
Thank-You.