Database Users

(Un)lock bootloader using Boot Unlocker

Good news everyone!
I've added the capability to unlock and lock the bootloader of the Yota Phone 2 to @segv11 's Boot Unlocker. There is already a pull request on GitHub for my code.
This means that everyone can now safely use custom recoveries without having to worry about warranty issues or losing data because of the mandatory factory reset.
Technical information
On the Yota Phone 2, the bootloader uses position `0x004FFE10` of the "aboot" partition, stored as `00` / `01` to indicate lock status, whereby `01` stands for "unlocked".
Download
For those eager to try it, until the pull request is merged, you can download the app from my GitHub repository. Please note that it is signed with my own developer key, so you will have to manually uninstall the official Google Play version from your device before installing it.

wow great just what i wanted :good::laugh:

Did you come to try it yet? I'd love to hear whether it works for other users.

For me (running android 6 beta) the app is not compatible with my device. (NOT WORKING ON DEVICE WAS THE VERSION FROM GOOGLE PLAY STORE)
I am using a yotaphone 2.
L.E.
could anyone confirm this app can relock the bootloader if root access is available? I have not yet rooted it yet.
I am asking this because we will need a locked bootloader to install google pay.

Did you try to install my version over the official Play Store version? This doesn't work, as the APK is signed with a different key. You have to uninstall the official version first.
Regarding a relock confirmation: I didn't try tools like SafetyNet, but when you relock the bootloader using Boot Unlocker, the bootloader command fastboot oem unlock again offers to unlock the device.
Unfortunately, I can't investigate much further currently, as I have installed Magisk, which needs a permanently unlocked device.

I testet the github version. The attempt to relock the bootloader on a unlocked Yotaphone2 on Android 6.0 ends in a boot loop

In my experience, the boot loop occurs when the boot partition is modified (e.g. after installing Magisk). If you flash the original boot partition (and potentially also recovery), the phone should be able to start just fine.

Different way?
Great job! Is any solution to unlock bootloader via fastboot mode like flashing modified aboot partition image? On my YD201 MM after turn off Extreme Power Saving Mode my lock pattern had been changed itself and i don't want to wipe data by fastboot oem unlock.

How to root Xperia L1?

I typed the code into my keypad and it went to system settings and it said I can't bootloader unlock this phone. Apparently I need this to grant permission for root. How do I root this particular phone? I managed to get a systemless root on my galaxy s5 by using TWRP to flash Majisk, although TWRP doesn't work for this phone. How can I actually root this phone. I would prefer to root with Majisk but honestly, I'd appreciate to know any way that I can really. Much appreciated!

if the unlock bootloader ALLOWED : is NO
then sorry sir
you cannot root this device!

There is a version of TWRP recovery for this phone which you have to flash to the boot partition, but I think in order to do this you need to have your bootloader unlocked. If your service menu says this option is disabled, then you're out of luck. :/ Sorry.

1. Go to Sony Developer site. Get bootloader unlockin code for your IMEI.
2. Dowload flashtool 9.25 with drivers.
3. In Developer menu tick allow OEM unlocking and USB debug.
I did it for my. It was not allowed to unlock bootloader first, but flashtool does it (in two steps)

i unlock the bootloader ,but i cant root this phone.
i try many ways but its faild.
plz help me to root my phone

old post I know, but did you get this rooted at all? as I have the phone (5 years now) and want to get a different OS on it to de-google it - but I'm new to it all, I have flashed firmware on other devices but never ventured into mobiles
cheers

Yoga tab 3 plus - not sure if bootloader unlocked

Hi,
Just bought an occasion yoga tab, every tutorial for a custom rom says to unlock the bootloader, and the only detailed info I found is on the lineageos install page.
So I created a lenovo account, and I enabled the oem unlock in the developer options but no countdown showed, does it mean it is already unlocked?
Is there a way to verify it?
Can I try with the rest of the instructions with no risk?
Should i try to launch "fastboot oem unlock-go", or should I directly try to flash twrp?
Thank you

I've got the Samsung Galaxy Tab A 8" ( 2019 ) [ SM-T295 ] and a few questions around it ( Custom Recovery & Custom ROM I wanna flash on mine Device)

At first to downgrade my CUK4 Bootloader, is there any Option? I've heard that to flash TWRP like there is a easy How-to-do-Guide, I need to have the Bootloader of maximum Level 2 not the actuell Bootloader of Level 4.
So can I downgrade it and when it is possible, how can I do it.
Otherway are there other options to install a TWRP-Recovery, or maybe PitchBlack, or Orange Fox Recovery?
What is the relation ship between my Model ( SM-T295 ) and at first the T290, or further the T280, or T285 ?
There are Lineage ROM's and shurly TWRP written for them. Can I modfify such a Recovery, or ROM to flash it on my T295, maybe, or can you tell me something else, knowables, interesting facts?
These two pictures will show you all informations you need, if you wanna help;
Here are all of my Informations:

Hi, I have been trying to root recently but there are issues I overcome, my bootloader is unlocked the device name is SM-T295, and the build number is T29XXS4CUG4. I gave up on flashing through TWRP because it says that the system is running in unauthorized software so I decided to flash using fastboot but my device ain't getting detected, I did everything like installing ADB and fastboot driver, and when I check in the device manager Samsung mobile USB CDC composite device help me, please.

@JonnyBoy1984 I have removed the photos from your post because they contain critical information such as your IMEI and device serial number. Remember, this is a public forum; everything you post here is visible on the Internet. Please ensure you remove this information in the future.
Also, when posting large photos, please ensure you either resize them or use a spoiler so you don't overwhelm mobile users.

How to make sure to Unlock Bootloader : Samsung Galaxy A 3 : SM-A300H ; Android 5.0.2 ( Lolipop ) ?

Hi,
1. My plans are Magisk Root ( version 25.2 ) & then TWRP through TWRP Official App. I want to unlock the bootloader & make sure there are no related issues.
2. I see there is no option available for Unlocking OEM Bootloader in developer options on the model. Also tried the 7 days date fooling method but still no such options appear.
3. Fastboot commands are not recognized by the model.
4. And the bootloader screen tells : Qualcomm Secure Boot : Enable ( CSB ) & Secure Download : Enable
Please help!

LittlePro said:
Hi,
1. My plans are Magisk Root ( version 25.2 ) & then TWRP through TWRP Official App. I want to unlock the bootloader & make sure there are no related issues.
2. I see there is no option available for Unlocking OEM Bootloader in developer options on the model. Also tried the 7 days date fooling method but still no such options appear.
3. Fastboot commands are not recognized by the model.
4. And the bootloader screen tells : Qualcomm Secure Boot : Enable ( CSB ) & Secure Download : Enable
Please help!
Click to expand...
Click to collapse
Hi, Samsung doesn't have fastboot mode, it only has odin. I'm not sure, but I feel that there is no need to have an unlocked bootloader on a phone this old. I know it may sound ridiculous, but I also had a Samsung with android 5 and in the settings I enabled OEM unlocking and installed TWRP without problems using odin. Try it too

Jan Skokan said:
in the settings I enabled OEM unlocking
Click to expand...
Click to collapse
that setting is not available for this device. Probably, ''Qualcomm Secure Boot'' is it's place holder & the thing to disable.
One or two posts on this forum mentions Qualcomm Secure Boot ( CSB ). Even one thread briefs about unresolved booting / loading problems due to that.
I have another Samsung phone which has Oem Unlocking setting. When enabled, it says OEM Lock : OFF & FRP Lock : OFF & everything else quite clear / as desired.
Anyway, Thanks for the response!