LG P760 bricked security error. - LG Optimus L9 P760, P765, P768, P769

I rooted it about few months ago and suddenly without reason that error started to show. im unable to do hard reset (android with blue thing flashes and after that phone restarts and security error again). unable to enter s/w mode. all i can do is after many tries i entered recovery mode. i tried fastboot but after i put battery in it is stuck on waiting for device. is there any way to fix it?

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[ROM Problem] Strange stuck LG P500 but not the usually problem

Hi, i've a strange (but i hope common and resolvable) problem.
After all, i say that i searched through the forum (with the search function) but with the solution that i found and tried i didn't solve anything.
I start saying that i got a p500 with a broken sdcard reader board (it simply doesn't have a microsd 'cause doesn't recognize).
That phone some days ago just shut down and went stuck on the LG Logo.
I tried at first the hard reset (home+vlm down+pwr), nothing happens.
I tried then the recovery mode and try to update with lg updater, and didn't work, lg doesn't recognize the phone on the updater (but on the main screen of the BBc app does).
The last thing that i noticed is that one time, powering on the phone, button's leds flashed about 4-5 times. but if i try to re-do the action, doesn't get anymore.
I would know if there is another way to exit from this stuck-screen.
I also post the log of error i get from kdz:
Upgrade error
WParam: 100
LParam: 500
Here is the log: http://pastebin.com/4SECdaT4
Other things i forgot to say:
I don't need to shake the phone, if kdz doesn't detect, i take off the battery, and turn on the phone in emergency mode (up+back+pwr).
Sometimes kdz works without that error, but it reboots the phone and it stucks again in the lg silver logo.
I read about a wipe of /system through adb, but if i try to mound /system, i get the command list.
I can't do adb devices, doesn't detect the phone, and in sequence to this, can't open the adb shell.
any suggestion?
You recovery got corrupt when it was stuck on LG logo, which could be easily solved by fastboot method of recovery flashing.
I was on the same situation like you are on now. Now follow this:
Try booting into fastboot mode by pressing "Power+ home buttons"
If it does then notify me here or at PM.
Between this is not the appropriate section for this thread.
I tried to fastboot, i did fastboot erase recovery and fastboot flash recovery recovery.img commands, no errors, but when i type fastboot reboot, on the screen i read: rebooting the device, but it doesn't reboot. If i take off the usb cable, (after a big time, 10 mins for example), a --suspend-- appears.
if i take off the battery, the lg logo is stuck again, and if i do home+vol down+pwr the clockwork mod doesn't appear.. any suggestion?
See your PM
Sent from my LG-P500 using Tapatalk

STRANGE LG G4 bootloop

Hello guys!
It all started today in the morning when I opened Instagram application on my G4 (H815 model) and suddenly the phone froze. After 15 or 20 seconds it tried to reboot itself but it went straight into bootloop. It's not acctually a bootloop. It tries to go past loading screen and reboots another time and after that all I can see is LG logo.
I tried to enter recovery mode. No success. I tried updating/flashing KDZ file with LG Flash Tool and I got error everytime saying there was not enough information....
Last thing I tried was to boot into download mode. It shows Firmware Update screen but I don't thing ADB is working. I tried command adb devices and it found nothing.
I'm so desperate now as I need phone tomorrow. I hope it's not hard-bricked. Do any of you have idea what to do?
Any help apprechiated
TIA
Nejc

Thl 2015 Recovery Loop Problem | Rooted | Kitkat 4.4.4

Hey there, I'm currently possesed a THL 2015, chiense phone, with firmare kitkat 4.4.4, Rooted.
Ok, today i was trying to change my Bootanimation (which i've changed several times already), but i've encountred a huge problem.
My phone has stucked on On/Off loops at the first time after i've changed the bootanimation...
Well i've tried to enter Recovery Mode.. but.. hmm.. how should i put it... My phone got stuck on it aswell..
My phone is looping in Recovery mode (i know that because there is the logo with the "No command thing"),
The device is turning off, then back on every 7~15 seconds after enerting automaticly into Recovery mode..
I've tried every single key pressing on the On/off key and Volume keys.. but in failure.. the Recovery mode won't goes out, and the device still loops.
Okay... now What i've tried also.
I've tried to connect my device into my computer trying to getting a shell trough ADB. but in failure, cause of the device loops in Recovery Mode, adb and the computer won't recongnizing my device.
Ok.. Flashing?
So i've tried to download SP_Flash_tool for flashing into stocked downloaded rom, but also in failure, non of the roms i've downloaded for my Device were recognized in the SP flash tool, (the scatter).
I've downloaded it from several sites in them were this site: needrom/com/download/thl-2015.
Tried every rom, still not recognizing.
Well i've failured in everything i've tried, so im here asking for help.
My main goal is getting a shell for my device, for me deleting the bootanimation i've tried to install.
ok.. i've talked too much..
Thank's for helping.

[HELP] phone stuck on bootloop all of a sudden

Hello, I have a xiaomi redmi note 4 mtk phone that got stuck all of a sudden in a bootloop, and I have no idea why or how to fix it, the phone's bootloader is locked, there was no new version installation going on/attemp to update software or anything similar to that, the phone just started to bootloop for no reason, stucks on MI logo for 1-2 minutes, then shuts down and restarts.
The real problem is that Im unable to enter fastboot or recovery mode as both doesn't work, so I can't think if any way to reinstall the system, connect the phone to the pc and somehow fix it or anything like that. Does anyone have any idea I can try? Cause Im pretty much lost...Thanks!
update: I managed to get to fastboot, but my usb debugging is disabled, what should I do?

Lg Optimus Extreme soft Bricked

Hello! Ive been stuck in this for almost a week, i thing i lost boot partitions in a failed flash attempt and i cant enter download mode, recovery or anything, only thing i can do is connecting to pc and i get a fastboot screen, cant hard reset neither. thanks beforehand. :highfive:

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