Problem with LG K8 model: LG-K350N (download mode not working) - LG K8 Questions & Answers

Hello, I have a problem with my old phone. The phone does not turn on to the system or download mode. After connecting to the charger, it charges normally and then restarts either to the words "Your device is corrupt. It can't be trusted and may not work properly." or to a security error. When I try to turn it into download mode, the LG logo is displayed with in left down corner text downlaod mode, then the message Your device is corrupt…. and it restarts.
When I enter the phone recovery, after clicking the buttons, the same message appears (Your device is corrupt and so on).
Thank you in advance for your help because this is the first time I meet it + there is nothing about my problem with the download mode.

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[Q] Stuck in bootloop (yes one more)

Hello everybody,
I'm having a problem : after failing to flash a rom with cmw on my F320S, i got stuck in bootloop : when i turn it on, i only have the LG logo with LED on. I can go to download mode, but then the phone isn't recognized anymore by my pc.
So i tried everything i could from this forum :
- with LG mobile support tool (from http://forum.xda-developers.com/showthread.php?t=2432476) : it says "upgrade is stopped because of an error". The phone is plugged with LG logo on, and as i said before if i go to download mode it keeps telling me to plug the phone.
- with flashtool v1.5 (http://forum.xda-developers.com/showthread.php?t=2475045) : if i plug the phone and turn it on, it asks me to go to download mode. But then the phone isn't recognized, and it says "download failed".
- with lg mobile support tool (the official one), it says my phone is up to date, and if i try the recovery after error option, the download never starts (i left it all night long).
I also tried to reinstall the drivers, with no effect.
As i said i'm on F320S, so all i have for startup is normal boot (stuck on LG logo), download mode (not recognized by computer), and if i push all 3 buttons a strange korean menu (google translation says it's "external structural mode" or something like that).
So if anyone had an idea, a solution, well anything that could help, i would be very grateful.
Thanks you all!
Come on guys! 57 views, 0 answer!
If anyone could even give me an idea, a hint, something? Did i miss something? Or is it bricked forever? Thanks!
can you boot into recovery?
If you can. either do adb sideload or flash a custom rom
Nope can't load into recovery... And in download mode phone isn't recognized, that's the main problem i guess, otherwise i would flash back to stock
Hey i finally maanged to get into recovery. But factory reset doesn't seem to work (unknown volume "/sdcard/ .andoid_secure). Wipe data didn't fix bootloop. Adb says no device. So what can i do?
Well after a whole day trying to get adb to work, i finally ended connecting to my G2. I followed all the steps to install twrp from here http://forum.xda-developers.com/showthread.php?t=2449670 . But now when i boot i don't have twrp, and if i push vol+ and power i don't have cwm either (says recovery mode, loading, and never loads)...
I guess i'm in trouble, could anyone help?
hello anyone?

d802 hard bricked, cant enter recovery, download mode, any advice appreciated

Hiya I managed to brick my d802 after wipng from twrp I believe.
It seems hard bricked and nothing is working, all the happens when I boot is that i gets stuck in the LG logo. If I try download mode its not working, and impossible to boot into recovery mode, when I hit the power button all it shows is "charging! ??/100" in a yellow font in download mode
Its not showing up in windows device manager as anything but "charging" also tried the guide on short circuiting the connections on the processor and its not responding to that also.
Ive attracted a link to a screenshot of the charging error. any advice is appreciated.
https://drive.google.com/file/d/1OO6...ew?usp=sharing
If it's stuck in LG logo, it's possible to turn it off completely, put it in download mode with a computer and flash a stock kdz. No need to fry the transistors.

LG Spirit bricked. Download Mode stucks on error.

Hello everyone,
It's the second time I have a problem with my LG Spirit but now I seem unable to do anything
About month ago my LG was getting stuck on LG loading animation but then I managed to flash it via Download Mode and LG Flash Tool. Everything went fine and the phone was operational till today.
After battery had gone flat I plugged it to recharge but "Security Error" occured.
While plugged in it constantly shows the error message and reboots again and again.
Of course, I tried flashing via Download Mode but in vain. Although Download Mode shows up, a message "Secure booting error. Cause: Boot certification verify." appears, the screen blinks in blue colour and turns off.
Any PC with any USB wire recognizes the LG. Debugging mode is switched on, but no modifications such as TWRP, etc. were ever made.
I also managed to restore default settings, but with no results.
Any ideas what to do?
Thanks in advance
I saw this thread earlier, maybe it can help you?
https://forum.xda-developers.com/lg-spirit/help/help-lg-spirit-h440n-access-to-download-t3623333

Samsung S8 issue after update

After the most recent update, the phone got stuck in a loop with a message ‘Your phone is encrypted, enter your PIN’. Entering your PIN showed the lock opening but it took you back to the same screen. I tried to boot it in safe mode and it was showing a message ‘Optimizing apps’ and then it went black and died. It won’t turn on in any way even in a recovery mode. Connecting to a PC shows the Qualcomm as a device but doesn’t recognize it as a phone.

SM-G935F Stuck at download mode after a sudden freeze

Hi everybody,
My Samsung galaxy S7 edge (G935F, Android Oreo) is now stuck at "Downloading do not turn off target" screen. The problem started after i uninstalled some apps and PUBG due to low space notification. After that the system frozed and stopped to respond, so i forced it to restart ( Volume down + Power button) and since then the phone reboots without showing the usual carrier and the samsung logos animations. It shows a "scrambled/damaged" image of the download mode which become normal after some seconds and stuck at this stage.
The detailed events time-line of the booting process is bellow:
1- the phone takes about 30 minutes to boot to the download mode
2- The carrier + Samsung animations logos were gone and not showing as before
3- some seconds before the download mode screen shows, a sort of a damaged download mode shows up and become normal after that
4- The download mode screen contains not text (usual firmware informations etc.. were not showing anymore)
5- The phone is stuck at this stage and there is no possibility to boot to safe mode or recovery mode or any other mode
*The phone is unrooted
*I tried to reflash the firmware with Odin (3.14) but it stucks on getting PIT stuff and fails with "There no PIT partition."
*i tried SmartSwitch and Kies but they failed too (i have no recovery code).
*Samsung usb drivers are installed
The screenshots of the phone and odin are attached bellow.

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