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Go Back   GSM-Forum > Product Support Sections > Hard/Software Products (official support) > Octopus/Octoplus > Octopus LG/Octoplus LG

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Old 10-18-2021, 19:41   #1 (permalink)
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LM-G900UM stuck in Fastboot mode [Answered]


Hello, I had a LG LM-G900UM stuck on FRP google lock, I found a package to downgrade the firmware. I got from here:
https: // lg-firmwares.com/downloads-file/23822/G900UM10d_00_OPEN_CA_OP_0730
I uploaded the firmware using Octoplus and everything seemed fone until reboot when I landed onto "welcome to Fastboot for Bootloader unlock:" and now I am in a really stuck position as I have no idea how to get out of this mode. My knowlage of fastboot is limited. I have adb fastboot installed on computer and am able to run minimal commands, .\fastboot devices brings back "LMG900UMc387c49b Fastboot"
the command .\fastboot reboot will also reboot the device but I have no idea how to get it out of this mode and boot it normally, button combinations all simply reboot back into this fastboot mode as well not being able to get into download mode at all.
I'm in reall need of some help to get this phone to boot normally.
Please someone with knowlage of this situation give me a hand, thank you.
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Old 10-19-2021, 03:28   #2 (permalink)
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adding images of phone state
https://photos.app.goo.gl/BV9KXg853TmNBkVw6
https://photos.app.goo.gl/PwCv2ChcT4deLnLM8
https://photos.app.goo.gl/rkc8QwKF78Df9boo7
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Old 10-19-2021, 08:29   #3 (permalink)
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Hello.

It happened due to the fact that you flashed the phone with firmware from another carrier.

Please, post here full software log of Write firmware operation, we will check it.
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Old 10-21-2021, 10:06   #4 (permalink)
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Quote:
Originally Posted by Octopus box View Post
Hello.

It happened due to the fact that you flashed the phone with firmware from another carrier.

Please, post here full software log of Write firmware operation, we will check it.
I tinkered with it for a day and then broke down and opened the back and disconnected the battery. reconnecting the battery and the phone atayed off.
Taking advantage of the phone finally staying off I held button up and connected the phone to my compounder. Was able to upload the velvet with the correct Android 10 firmware.
Bypass frp and then use LG bridge to update to newest firmwares and done.
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Old 09-20-2022, 19:34   #5 (permalink)
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Quote:
Originally Posted by BioMelt View Post
I tinkered with it for a day and then broke down and opened the back and disconnected the battery. reconnecting the battery and the phone atayed off.
Taking advantage of the phone finally staying off I held button up and connected the phone to my compounder. Was able to upload the velvet with the correct Android 10 firmware.
Bypass frp and then use LG bridge to update to newest firmwares and done.
Can you please share the version you used to recover your lg velvet? I tried multiple versions and always opid missmatch
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