Cannot Boot Into Fastboot, Bootloader Is Unlocked... - LG G7 ThinQ Questions & Answers

Hello all,
I'm pulling my hair out trying to figure this one out. I have long ago unlocked the bootloader and have crossflashed my G710PM to ULM. At this point my main goal is to flash lineage to this device. I had originally bricked the phone flashing a V30 experimental bootloader, seeing as it was my daily driver, I went an purchased a new phone. Now I'm back to work on this phone as a project, and with a quick QFIL flash, I'm back to square one.
I have only been able to access fastboot when I have the ULM11g firmware flashed to the phone, as far as I'm aware, you can't flash TWRP using this version so I flashed ULM21d in order to get TWRP on it. I wasn't able to get to fastboot from this version so I tried flashing the Euro firmware EM20b. Once again, no fastboot. I've made multiple attemps to find the abl-a image for the ULM version with no success.
I'm determined to get lineage on the phone.. Any help as to where I should start would be hugely appreciated!

Flash Ulm11g again and ab_a then flash ulm20e or 20

Related

Unable to access Recovery to unlock H815 after flashing TWRP from rooted phone

I think I now understand my mistakes, but I'd love to hear it if there's a way around this. I have the International version H815. My plan was to end up with a rooted version of Marshmallow. At the beginning of the day, I was not so clear about the difference between unlocking and rooting. I followed directions to install a rooted version of Lollipop. That went well. I flashed TWRP but couldn't figure out why that didn't work until I figured out that the bootloader should have been unlocked first. I then went through most of the steps to officially unlock the phone, but my phone just hangs at a fastboot intro screen using the abd reboot bootloader command, so I can't use the fastboot utility to recover the device ID I would need to get an unlock code. And I can't get into the original recovery menu using the power-volume down keys. I think I overwrote the stock Recovery utility when I flashed TWRP from within a rooted system. Switching back to a stock kdz didn't help. The phone still works fine otherwise, but now I see no path to unlocking it and then installing TWRP to load a rooted 6.0 image. Should I just give up now, or are there any other options?
Thanks,
Jim
Got it working
I reinstalled the rooted image and flashed a stock recovery.img. That didn't work. Then I went back to stock with a different kdz image. I still couldn't access the recovery tools with the power and volume down buttons, but I was a able to get fastboot functioning and got the unlock code from LG and entered it - now to see if I can go back to an unlocked system and install TWRP to upgrade to Marshmallow.

sofrbrick/bootloop

Hi all,
I am new to this forum, but have some experience with rooting and custom roms(oneplus one and samsung)
Now with the Mi Max 3, which was unlocked, i have flashed the recovery twrp-3.2.3-0-nitrogen.img, but I did not realize that
i had to reboot into this recovery from the fastboot mode.
so I endet up with a locked bootloader and bottloop and am not able to unlock the bootloader again.
I think my only solution is the test-point method and a EDL authorized account.
Some help would be greatly appreciated.
thanks
Henry
You don't have to boot into the bootloader from fastboot mode, you can press the power button and volume up button like on almost all other Android phones to boot into TWRP recovery. Sometimes it takes a few attempts to get right, but you should learn how to do it eventually.
Unfortunately it sounds like you had one of the dodgy re-sold Chinese models that had been re-flashed with Global firmware and it's locked your bootloader again on reboot.
Your only option is to use the official Miui Flash tool to boot into fastboot mode, flash the latest Global Developer ROM, and then sign in with your account and apply to unlock the bootloader again using the Miui unlock program. It may be instant but, they'll probably make you wait 720 hours, as the entire point of the program was to stop phones like yours being re-sold outside China.
At least you'll have a usable, non-bricked device though.
Thanks for your answer.
now I have opened the backcover (yes was much work ( I succeded without destroying something) and could apply the test point method to get into the lde mode.
Win10 shows it as qualcomxx at com 3
what is the best way now to awake it to life again? even without unlocking.
hi,
with the test point method I could flash the chinese rom, and the mi max 3 is awaken to life again!
The bootloader is still locked.
I have applied for unlocking, but have to wait some 15 days.
One tip: if the case is open, one can apply a little bit of silicon grease to the small pins on the side of the plastic frame
before closing it. Opening it again is much easier then.
One question: if I replace the recovery.img of the chinese rom with a TWRP image (renamed to recovery.img)
and flash that modified rom with the test point method, could this probaly work?
With a working TWRP one could install other roms without unlocking bootloader.
If yes, which TWRP would you apply?
Thanks
freedoc said:
Hi all,
I am new to this forum, but have some experience with rooting and custom roms(oneplus one and samsung)
Now with the Mi Max 3, which was unlocked, i have flashed the recovery twrp-3.2.3-0-nitrogen.img, but I did not realize that
i had to reboot into this recovery from the fastboot mode.
so I endet up with a locked bootloader and bottloop and am not able to unlock the bootloader again.
I think my only solution is the test-point method and a EDL authorized account.
Some help would be greatly appreciated.
thanks
Henry
Click to expand...
Click to collapse
Flashing a recovery should not lock your bootloader, so I don't know how you did it. Note, that if you are using Xiaomi's firmware tool, you should not forget about unticking the box to lock the bootloader. But I would suggest to stay away from that tool and go command line instead with fastboot.
If you can access fastboot, I'd recommend to flash an official fastboot tgz ROM of your choice. Official ROM should boot even with an unlocked bootloader and you may start all over again more carefully.
So I think you might be able to avoid using EDL mode at this stage.
probally I forgot to untick that box. The bootloader is locked and I have to wait 319 hours.
I have got to love the test point EDL method which is simple and effective, and gave me control over the device again.
If I flash again the chinese fastboot rom (in which I have changed the original recovery.img into TWRP.img, named recovery.img) via the EDL
will that give me an installt TWRP (still with locked bootloader, but possible to install custom roms) or will i have a brick again?
thanks
freedoc said:
probally I forgot to untick that box. The bootloader is locked and I have to wait 319 hours.
I have got to love the test point EDL method which is simple and effective, and gave me control over the device again.
If I flash again the chinese fastboot rom (in which I have changed the original recovery.img into TWRP.img, named recovery.img) via the EDL
will that give me an installt TWRP (still with locked bootloader, but possible to install custom roms) or will i have a brick again?
thanks
Click to expand...
Click to collapse
Only you can answer that question by trying it out. Are you sure you have to wait for the unlocking again? Double check that! As I know you also need a priviliged xiaomi account to be able to resurrect a device in EDL mode.

Bricked Mi 10T - Bootloader Re-Locked - MIUI 13

I have a Mi 10T purchased in Italy, and therefore coming factory loaded with a "branded" firmware RJDEUHG. It should be a Windtre modded ROM, please correct me if I'm wrong.
The latest known working ROM was the miui_APOLLOEEAHGGlobal_V12.5.3.0.RJDEUHG_da9e1c75b5_11.0.
Tired of waiting for the slow updates, compared to the unbranded global rooms, I decided to de-brand the phone and upgrade to a stock RJDEUXM.
But none of the XM firmware would load from recovery, therefore I applied and successfully unlocked the bootloader.
With the bootloader unlocked I managed to successfully flash
apollo_eea_global_images_V13.0.2.0.SJDEUXM_20220329.0000.00_12.0_eea_ad6f7ce846
apollo_eea_global_images_V12.5.12.0.RJDEUXM_20220208.0000.00_11.0_eea_664a15ed19
but both got stuck in a bootloop right after flashing.
During one of the many attempts, I used the MiFlash tool and accidentally left the default Flash & Lock option, the flashing was successful and the bootloader was locked.
At the moment I'm on V13.0.2.0.SJDEUXM, and can load onto bootloader and recovery, while, as mentioned before, the system won't load and get stuck in bootloop.
If I try to unlock the bootloader once again, the MiUnlock does not recognize the phone while in fastboot mode, remaining in the "Not connected to the phone" screen.
Any help would be really appreciated.
maybe, this is the solution, seems the same issue
https://c.mi.com/thread-3265050-1-0.html
fastboot devices
fastboot continue
if you have some lucky, boot normally
otherwise follow all the step
bye

Entering Bootloader on G8?

I’ve unlocked my bootloader and rooted previously on the stock A10 ATT rom. I’ve then cross flashed to the A11 CAN version. Bootloader is still obviously unlocked but root is gone. I understand how to root again but I can’t get into bootloader mode to see if I have an active boot_a or boot_b. Does anyone know how to do this or any other way to see which is active? I’ve tried button combinations and ADB reboot bootloader command with no luck. It was working fine previously but I can no longer get into it after crossflashing.
BWA_Dallas said:
I’ve unlocked my bootloader and rooted previously on the stock A10 ATT rom. I’ve then cross flashed to the A11 CAN version. Bootloader is still obviously unlocked but root is gone. I understand how to root again but I can’t get into bootloader mode to see if I have an active boot_a or boot_b. Does anyone know how to do this or any other way to see which is active? I’ve tried button combinations and ADB reboot bootloader command with no luck. It was working fine previously but I can no longer get into it after crossflashing.
Click to expand...
Click to collapse
You probably don't have the engineering abl flashed to the appropriate abl slot. Using that abl is what gives you fastboot. But once you've used it, you have to flash the original back, so that the phone will boot. The engineering abl is based on an earlier version of android.
This is exactly what I needed. Thank you!

LG G8 ThinQ Verizon got bricked after TWRP installed

Hi, i just got a LG G8 ThinQ Verizon last night and i wanted to install lineage OS for it but when im done unlocking the bootloader and installing TWRP 3.3.1.0, my phone just keep booting into TWRP and saying no OS installed, it couldn't reboot into system or fastboot or edl, is there any way to fix this?
Verizon doesn't support custom ROM, for your case, please flash the original firmware
Tatsh said:
Verizon doesn't support custom ROM, for your case, please flash the original firmware
Click to expand...
Click to collapse
Im trying to flash the original firmware into my phone but it cant boot into edl mode, which is needed for flashing stock rom.
dont plug your phone in usb while booting into edl, most of the case it wont work if you plugged in
if it dont work, force shutdown your phone and try EDL combo again

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