Develop Bugs

Bootloader HELP

Hi.
Recently I was interested in making a root for my device- LG G4 H815L(Israely version). So i started to explore about the difrences, and some guys told that there is a difference in the bootloader. BUT when I got my phone into bootloader the next massage was written:" *Welcome to Fastboot Mode for bootloader unlock:
Quick Guidance
1) Read Device ID : fastboot oem device-id
2) Write Unlock Key : fastboot flash unlock unlock.bin
3) Check bootloader is unlocked : fastboot getwar unlocked"
As you see this is a guidance how to unlock the bootloader. Now Im in some dilemma because of it.
My questions are:
1. Can I unlock the bootloader?
2. What happens if i get to hard/soft break because of it (and what is the sulution if you know)?

remote: oem unlock is not allowed

Hi,
I am using my Nextbit Robin Oem Unlock from last 1 year but today i decided to go back to stock with locked Oem.
I flashed the stock rom and locked the Oem at the same time but when i restarted the phone it got stuck at the boot.
So I went ahead with the 'fastboot oem unlock' command, and here's the problem. All flashing command returns FAILED <remote: device is locked...>.
fastboot oem device-info reads: Device tampered: false, Device unlocked: false. So bootloader is locked. At this point I assume that the bootloader is unlocked, but revert back to locked after reboot (the phone automatically rebooted after executing oem unlock command, so can't get around that).
Tried numerous other methods, using different adb files, no dice. Can't even flash TWRP. Tried adb sideload, same. Tried executing fastboot oem unlock with various different parameter, still locked after reboot. I cannot flash anything into locked bootloader.
Google researched it for few hours, same problem happened to other phones from other manufacturers that came returned from warranty replacement with modified motherboard; OR tampered/broken eMMC/NAND flash. But no such case for Nextbit Robin (yet?).
Pretty hopeless right now since I just found out that Nextbit Robin support ended on Aug 1st.
Guess I'm stuck with locked bootloader and no cell signal phone. Unless someone can help. One can always hope.
Anyway, thanks for reading.

Mukul_Meena said:
Admin Note: This is a special Q&A-formatted thread. Please follow this link to view it in your browser: http://xda.tv/post76659814
Click to expand...
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If you bootloader is unlocked I think you can give a try to the Nextbit's Unbrick Tool
As you want to go back to stock , I think this is a good idea.
Now if your bootloader isn't unlocked there is unfortunately nothing I can do for you , unless you unlock it .
Edit #1: If your bootloader is locked , go to bootloader mode by pressing volume down + power button for about 20 seconds and try to see the bootloader state with fastboot commands. If it is unlocked , follow the process in the @nextbitKhang's thread .

Yes that's the main issue. Oem is Locked.
Is there any Oem unlock code i can use to unlock from ADB?

I don't think so ,I'm not sure, but I hope you'll find one.

On your Robin go to settings > system > about phone > tap build number until it shows developer options.
Go into developer options which is in settings > system > developer options.
Make sure OEM unlocking is enabled. (for good measure disable then re-enable)
Also make sure usb debugging is enabled. Have the Robin plugged into a computer so you can enable to pop-up on Robin asking for access for the computer.
Once they are both enabled shut down your phone. Turn it back on while pressing vol down+power and plugged into your computer.
In adb run command fastboot oem unlock

please i'm experiencing the same issue not on nextbit but on GIonee.
i have re-activate both OEM unlocking and USB debugging several times but it all void
same error: Remote: OEM unlock is not allowed
please kindly help

Downgrade from Pie to Oreo without Root and unlocked Bootloader?

Hey guys,
can someone tell me if it's possible to downgrade the stock android pie version to stock oreo without rooting my device or unlock the bootloader?
I read some threads and posts but i'm not sure, because the information is disputed.
So can i flash the old stock android without getting a brick or getting stuck in edl-mode?
Thank you for your answers

Mansil234 said:
Hey guys,
can someone tell me if it's possible to downgrade the stock android pie version to stock oreo without rooting my device or unlock the bootloader?
I read some threads and posts but i'm not sure, because the information is disputed.
So can i flash the old stock android without getting a brick or getting stuck in edl-mode?
Thank you for your answers
Click to expand...
Click to collapse
Hello,
I think that it's not possible without unlocking bootloader. The unique solution is to enter in edl-mode but this is more dangerous than unlock the bootloader. Unlock bootloader is very simple and not dangerous, you are just going to loose all of your data but with a backup this is not a problem.
Root is not necessary for that, if you need help to do your downgrade with bootloader unlocking tell me !
I'm here if you have any question or if you need help !
Pierre

Flashing via EDL Mode only works with unlocked bootloader!
Unlock Bootloader will erasing all data (reset system)!

Pierre_C said:
Hello,
I think that it's not possible without unlocking bootloader. The unique solution is to enter in edl-mode but this is more dangerous than unlock the bootloader. Unlock bootloader is very simple and not dangerous, you are just going to loose all of your data but with a backup this is not a problem.
Root is not necessary for that, if you need help to do your downgrade with bootloader unlocking tell me !
I'm here if you have any question or if you need help !
Pierre
Click to expand...
Click to collapse
Can you send me the links for unlock bootloader and oreo firmware? I can't find them

ᵀᴴᴱK!D ᴼᴿᴵᴳᴵᴻᴬᴸ ツ™ said:
Can you send me the links for unlock bootloader and oreo firmware? I can't find them
Click to expand...
Click to collapse
I don't now the link but I can explain you the process.
/!\ This will erase all of your data !!
1) Enable developer options by going to Settings > About Phone, scroll down to Build number and tap 5-7 times to enable developer option.
2) Once you enabled the Developer Options. Returned back to Settings > Developer Options > USB Debugging and OEM Unlock. Just Enable there options.
At that time you have 2 option, official option and non-official version.
- Official Version,
This method require some days because you have to ask xiaomi to send you an unlock code.
You need Windows it doesn't work on Linux.
1) Go to http://en.miui.com/unlock, click on Unlock button on the webpage now you have to login and then proceed to tap on Download Mi Unlock from the resulting page.
2) Now, proceed to put your Xiaomi Mi A2 Lite into Fastboot mode by powering it on while holding Volume Down and Power buttons simultaneously. Hold until you see your phone is booted into Fastboot mode.
3) After the successful login, the validation process will start on your phone, and for the first time, you will get a message that “You don’t have the permission to Unlock the device”
4) Now click on the “Go” button or use Go to MIUI Unlock page to receive the unlocking permission.
5) Now click on the Unlock Now and log in with your Mi account details and fill all details.
6) You will get OTP for confirmation use it to complete the process.
7) Now wait until your application gets approved, you will receive the OTP password on your phone number once it’s approved.
8) Now Open the Mi Flash tool click on unlock and pass the two pop-up. Your device will be unlocked
Non-Official but simple version :
1) Proceed to put your Xiaomi Mi A2 Lite into Fastboot mode by powering it on while holding Volume Down and Power buttons simultaneously. Hold until you see your phone is booted into Fastboot
mode.
4) Download Miniamal ADB and fastboot in you are on windows, https://forum.xda-developers.com/showthread.php?t=2317790
If you are on linux use
Code:
sudo apt-get install fastboot
Code:
sudo apt-get install adb
3) On Windows in Minimal ADB and fastboot or on Linux on the terminal enter this command
Code:
fastboot oem unlock
4) Your phone will reboot, it's unlock !
PS: Sorry for my bad English
Pierre

PC295 said:
Flashing via EDL Mode only works with unlocked bootloader!
Unlock Bootloader will erasing all data (reset system)!
Click to expand...
Click to collapse
Actually you could avoid the erasing data
When you get in to fastboot mode
hold to volume down button before and write "fastboot oem unlock" code
dont release until phone shows mi logo at the startup

"Start Up Failed" after flash

Hello friends
a friend brought me a Moto G7 Play (XT1952-2), and said he had forgotten the password, the email and all, to try to recover, he tried to flash, but did not unlock the bootloader, did not enable USB debugging and did not enable OEM unlock and yet downgraded on mobile.
The result is that the phone no longer leaves the Start Up Failed screen, it shows the following messages:
Fastboot AP Flash Mode (Secure)
SSM: Android checking failed.
No bootable A / B slot
Failed to boot Linux, failing back to fastboot
Fastboot Reason: Falling Through Normal Boot Mode
I already tried to unlock the bootloader, but as the OEM unlock option is not enabled, I could not. I tried to flash with the same rom as before or with a more current one and it didn't change anything either. I've tried basically everything I found in the forums. Can someone give me an idea of ​​what to do?
Tks!

riickseven said:
Hello friends
a friend brought me a Moto G7 Play (XT1952-2), and said he had forgotten the password, the email and all, to try to recover, he tried to flash, but did not unlock the bootloader, did not enable USB debugging and did not enable OEM unlock and yet downgraded on mobile.
The result is that the phone no longer leaves the Start Up Failed screen, it shows the following messages:
Fastboot AP Flash Mode (Secure)
SSM: Android checking failed.
No bootable A / B slot
Failed to boot Linux, failing back to fastboot
Fastboot Reason: Falling Through Normal Boot Mode
I already tried to unlock the bootloader, but as the OEM unlock option is not enabled, I could not. I tried to flash with the same rom as before or with a more current one and it didn't change anything either. I've tried basically everything I found in the forums. Can someone give me an idea of ​​what to do?
Tks!
Click to expand...
Click to collapse
Download Your Latest ota zip from
https://mirrors.lolinet.com/firmware/moto/channel/official/
then flash via rsd lite that will fix your phone and reset it

Help download
motorola/aljeter/aljeter:9/PPPS29.55-35-12-3/a0b9b:user/release-keys

Can't Unlock Boot loader [Error: FAILED (remote : Not implemet.) - BLU G5

I've been trying to unlock a Blu G5 - I've gotten as far as patching the disk image and all that is left to do is just flash the image onto the phone.
The issue is whenever I try to flash something onto the phone I get the following error :
Code:
FAILED (remote: Flashing Lock Flag is locked. Please unlock it first!)
.
When I go to unlock through Flashing unlock I get the error in the title - OEM unlock gives me cmd not found.
I have USB debugging and OEM unlocking both enabled inside the app settings. I'm not sure if its pertinent but on Magisk I see "Ramdisk : No". I've also been unable to get into recovery mode despite trying every combination possible except for once on accident (which I haven't been able to replicate).
Any help would be appreciated, Thanks!

yodamaul said:
I've been trying to unlock a Blu G5 - I've gotten as far as patching the disk image and all that is left to do is just flash the image onto the phone.
The issue is whenever I try to flash something onto the phone I get the following error :
Code:
FAILED (remote: Flashing Lock Flag is locked. Please unlock it first!)
.
When I go to unlock through Flashing unlock I get the error in the title - OEM unlock gives me cmd not found.
I have USB debugging and OEM unlocking both enabled inside the app settings. I'm not sure if its pertinent but on Magisk I see "Ramdisk : No". I've also been unable to get into recovery mode despite trying every combination possible except for once on accident (which I haven't been able to replicate).
Any help would be appreciated, Thanks!
Click to expand...
Click to collapse
having the same problem right now. did you get a fix?