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LGH815 - Cannot boot to bootloader
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RichardGomer 
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I'm trying to get the device ID for an LGH815. When I issue "adb reboot bootloader" or "adb reboot-bootloader" or boot with the volume up key pressed, it just boots to the normal system.
It's an EU model, and I have enabled "OEM Unlock" in developer settings.
Any ideas?
Posted on 22-Mar-2017
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narae0.kim
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Re:LGH815 - Cannot boot to bootloader
Hello,
Please make sure that the device is connected to the PC.
The latest Android SDK and a proper version of USB driver for your phone must be installed on your PC.
And USB debugging/OEM unlock settings should be enabled.
When the settings are ready, enter “adb devices” and "fastboot devices" in the command window to check if the Android device is recognized or not.
If the problem persists, please try it on a different PC.
Thank you.
Posted on 23-Mar-2017
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benjurio
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Re:LGH815 - Cannot boot to bootloader
Hello,
I have the exact same problem.
USB debugging / OEM unlock is enabled.
"adb devices" recognizes my phone properly.
I've tried it on 2 PCs already.
If I enter "adb reboot bootloader", the phone just restarts normally. Using the suggested hardware keys to access recovery mode doesn't work either.
Is this function blocked somehow in my phone?
Posted on 29-Aug-2017
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narae0.kim
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Re:LGH815 - Cannot boot to bootloader
Hello,
In case of the G4, only H815 for the European market is supported.
Please check if your phone is for the European market first.
Thank you.
Posted on 30-Aug-2017
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benjurio
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Re:LGH815 - Cannot boot to bootloader
Hi,
According to LG Phone Info app:
Original: OK
Model: LGABCD
Color: XX
IMEI: 359872067376870
Serial number: XABCXX
Provider: ABC
Provider name: ITALY
Network type: ABC
From this information, I can't tell if it's for EU market or not. (This is a refurbished phone from Aliexpress.)
Can you please check what these informations mean?
Thank you for your help,
Bence
Posted on 30-Aug-2017
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narae0.kim
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Re:LGH815 - Cannot boot to bootloader
Hello,
Where did you check the information? Is it displaying on the phone screen?
Upon checking the IMEI, it supports the bootloader unlocking, but it doesn't seem so normal because it contains meaningless string: ABC.
If the problem persists, please visit LG customer service center in your region and check this problem with them.
Thank you.
Posted on 31-Aug-2017
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phialsquiz
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Re:LGH815 - Cannot boot to bootloader
Brand: LG
Breakdown: TAC:3598720 SN:67376870
Model: LG-H815
Device Type: Smartphone
IMEI: 359872067376870
Posted on 26-Dec-2017
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EdwardB
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Re:LGH815 - Cannot boot to bootloader
i have the same problem with the LG v40 ThinQ... in fact, it can't get into a useful recovery...
Posted on 1-Dec-2018
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massimino
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Re:LGH815 - Cannot boot to bootloader
Good Morning, trying to apply imei and device id all the numbers are correct, writing all in one string but i receive this message, Device ID is unmatched. Please check your Device ID. Your account will be locked if you enter the wrong Device ID more than 1 time.
May somebody help me?
Regards
Massimo
Posted on 4-Jan-2019
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