Question Can't unlock bootloader - Samsung Galaxy Z Flip 3

OK I'm from the UK and I have a Z Flip 3 SM-F711B I have to do the trick where u set the time back to make it so the oem unlock appears in developer settings and then when I reboot to download mode there is no long press volume up don't know why it's doing this as I now what I'm doing as I used to use custom roms on all my other samsungs.

blade1500 said:
OK I'm from the UK and I have a Z Flip 3 SM-F711B I have to do the trick where u set the time back to make it so the oem unlock appears in developer settings and then when I reboot to download mode there is no long press volume up don't know why it's doing this as I now what I'm doing as I used to use custom roms on all my other samsungs.
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If you don't mind, post some screenshots.

I'll do it when I get in from work

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Make sure you have enabled OEM unlock in developer options first.
Translated Chinese to English on 2nd screenshot:
Long press volume up to unlock bootloader.

I've enabled it in dev menu so I'll have a look on what u said on the second pic

Related

Have a XT1028, need help for using just like a mp3 player and game (not phone or sms)

Have a XT1028, need help for using just like a mp3 player and game (not phone or sms), phone is on an activation screeb and cant use.
Is there any way to bypass this activation screen like flashing an odin rom? i have read it has a locked bootloader, dont know if i can flash it with this lock.
As i have said if phone feature is broken dont mind... i will only use like mp3 player and games
Thanks in advance
PD: sorry about image size, dont know how to reduce size
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If you have TWRP you can delete the setup wizard from system/app/setupwizard and then when you reboot the phone you can use it
Ctafolla2 said:
If you have TWRP you can delete the setup wizard from system/app/setupwizard and then when you reboot the phone you can use it
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i dont have it. Can i flash it with odin? or have to unlock bootloader first
You need to unlock boorloader first and then flash it via fastboot

motorola xt1528 FRP remover

first watch this video
https://www.youtube.com/watch?v=QgwI31JBtmo&feature=youtu.be
in search
search for about
Enable Developer Options in about
back to apn setting and search again for Developer
Enable Developer Options
download alfahd motorola frp tool
http://www.mediafire.com/file/caagf6v6jlyb0nx/MOTOROLA+FRP+alfahd.rar
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chose 1 , 2 and 3
now go to factory reset
My Xt1528 is not on the updated android version. It never received the update, so for some reason i am unable to enable the developer options by tapping build number. It will not let me enable developer mode. Any other method?
rgill420 said:
My Xt1528 is not on the updated android version. It never received the update, so for some reason i am unable to enable the developer options by tapping build number. It will not let me enable developer mode. Any other method?
Click to expand...
Click to collapse
you have to tap around 5-6 times
devilrulz4ever said:
you have to tap around 5-6 times
Click to expand...
Click to collapse
7 times

Cannot enable OEM unlock in Developer options. Please Help.

My phone is T-moblie version G5 H830.
It now on android 7.0 with 20C.
I wish to unlock the bootloader but i cant enable the OEM unlocking options. (just look like the picture)
Please Help!
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https://drive.google.com/file/d/0Bz9xVQeqNcKOZVBfamhFbkpjTW8/view?usp=sharing This link links to the picture.
kugcsq said:
My phone is T-moblie version G5 H830.
It now on android 7.0 with 20C.
I wish to unlock the bootloader but i cant enable the OEM unlocking options. (just look like the picture)
Please Help!
https://drive.google.com/file/d/0Bz9xVQeqNcKOZVBfamhFbkpjTW8/view?usp=sharing This link links to the picture.
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perhaps the bootloader is already enabled? what do you see when the phone boots?
nkhater said:
perhaps the bootloader is already enabled? what do you see when the phone boots?
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yes , it has already unlocked.
Try fastboot oem lock and then fastboot oem unlock that will work!

" Request Parameter Error " when trying to unlock bootloader

Hi,
i am unable to unlock my Redmi Note 6 Pro, i had one before and while long the process was relatively straight forward.
But this one I can't seem to pry it open. I tried to use my old account, error. I tried a new one. same error. a new version of the flash tool. same. a new version of the Android driver. same.
I draw a blank there can somebody tell me how to crack this ? is this a known error?
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You have in the developer options set the oem unlock and set the option under that you can unlock?
https://forum.xda-developers.com/re...ow-to-unlock-bootloader-install-twrp-t3884792
ALcAtRas500 said:
You have in the developer options set the oem unlock and set the option under that you can unlock?
https://forum.xda-developers.com/re...ow-to-unlock-bootloader-install-twrp-t3884792
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yes
To right unlock you have to set this Account witch your phone number its saved. By new Account they be write that can be take about 720 hours that you can unlock. In the developer Option it must be sayed that your Account sucess put for unlock.

Redmi note 7 pro unlock failed

i have inssues with my phone i can't acces setings for unlock debugging or i try unlock bootloader with xiomi tools v2 but failed something about token ,and everytime show up main menu redmi recovery 3.0 and is write text with red color this miui version can't be installed on this devices sor if i make mistake on forum i posted in another article
i have succes before with custom roms from this website but now i don't know why is broke and don't work anymore please help me recovery my phone
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is not my phone but something like this show me on screen
I recovery my phone i just sign with account which i unlock phone frist time ,because before i use account which i don't unlock the phone i m write this messages after phone If You unlock the phone frist time the phone is unlock but use the same account with You unlock the phone

			
				
Next time when want flash custom rom use clean all not block all

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