Bricked my LG k10 430DSY

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123xdagsm

Senior Member
Mar 15, 2011
268
23
world
Hello
My LG k10 430dsy is stuck on a bootloop and I cant boot into recovery and fatboot and download mode, I just get the message "Your device is corrupt. It cant be trusted and may not work proper"
no download mode no recovery and no fastboot mode
how can I fix this? I could use some help please, even if it means reformatting the phone any way possible, thanks.
 
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123xdagsm

Senior Member
Mar 15, 2011
268
23
world
I want to root lg k10 430dsy ando this commands
1. Enable developer options on the lg K10
2. Enable OEM unlocking and USB debugging
3. Copy twrp.img to disk C: /
3. Go to C: / and open command window. Enter: adb reboot bootloader (phone will start in fastboot mode)
4. Once in the fastboot mode enter the command: fastboot boot twrp.img
5. Once inside TWRP press cancel and then slide to allow modifications.
6. Mount System, data and sdcard.
7. Make BOOT-only backup (uncheck all other partitions)
8. Mount MTP
9. Copy BOOT backup from TWRP folder in our SD card (Boot.emmc.win) and rename bootlz4.img
10. Copy to Boot-resources of CARLIV IMAGE KITCHEN
11. Decompress with Carliv
12. Open bootlz4 folder and find the file "boot.img-ramdisk-compress".
13. Edit "boot.img-ramdisk-compress" with notepad ++ and change "lz4" to "gz"
14. Save
15. Recompress bootlz4.img
16. Go to output folder and look for bootlz4xxxxx.img and rename it as bootgz.img
17. Go to TWRP and restart in bootloader mode
18. Write in command window: fastboot flash boot bootgz.img
19. Then write in command window: fastboot boot twrp.img to return to TWRP

I must flash bootgz_0.img in TWRP
by cpatrick3000 method is false
Plese use method gottlasz for root
i can't aging boot twrp because error "larg size" and remove batterry and my device is bricked
I do hard reset not work
flash lg and lg up not work for 430dsy ony work lg Bridge i use lg bridge for flashing firmware but can't because trying to enter download mode and nothing happens, just text "download boot" download mode is bricked too
My LG k10 430dsy is stuck on a bootloop.show logo lg then show message "Your device is corrupt. It cant be trusted and may not work proper"
holding volume up and connecting using USB cable to PC only connecting two seconds then disconnect
and trying to enter download mode and nothing happens, just text "download boot: after five seconds show message :your device is ........." then turn off bootloop
still not found any way to go to fastboot
 
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rebamontan22

New member
May 1, 2017
1
0
Device is corrupted

Hello
My LG k10 430dsy is stuck on a bootloop and I cant boot into recovery and fatboot and download mode, I just get the message "Your device is corrupt. It cant be trusted and may not work proper"
no download mode no recovery and no fastboot mode
how can I fix this? I could use some help please, even if it means reformatting the phone any way possible, thanks.

We have a same problem bruh I tried to boot on twrp.img after that my k10 shutsdown and when its reboot a notice say (your device is corrupted it cant be trusted and may not work properly) I try to recover but nothing happens its like bootlooping and no fastboot no download boot no recovery WTF. many tutorial on youtube and says boot to qualcom mode but I cannot locate the killer switch inside the k10 main board.
 

curtgriff

New member
Mar 12, 2015
1
0
bricked LG K430dsY

bricked my LG K10 trying to root it (430dsY), the only thing I can do is connect the USB and hold it in "firmware update" mode, ... my command prompt with adb and fastboot is non-responsive... loaded TWRP through fastboot and ran rce.img,- twice, following instructions from a youtube.be link (cMipOfeW6B0)
after second flash of rce.img, it busted. yeah, I feel really stupid. I never got to super-user, any help?

I do have a backup image file made with TWRP on phone, (backup.ab) 437MB, anyway to flash the device from command prompt, get device to respond to command prompt?

"...Anyways if your phone connects and stays connected for more a second or two you might have a chance just PM me...
What caused the situation if i may ask?[/QUOTE]

---------- Post added at 06:49 PM ---------- Previous post was at 06:43 PM ----------

bricked my LG K10 trying to root it (430dsY), the only thing I can do is connect the USB and hold it in "firmware update" mode, ... my command prompt with adb and fastboot is non-responsive... loaded TWRP through fastboot and ran rce.img,- twice, following instructions from a youtube.be link (cMipOfeW6B0)
after second flash of rce.img, it busted. yeah, I feel really stupid. I never got to super-user, any help?

I do have a backup image file made with TWRP on phone, (backup.ab) 437MB, anyway to flash the device from command prompt, get device to respond to command prompt?

just trying to get some help...

"...Anyways if your phone connects and stays connected for more a second or two you might have a chance just PM me...
What caused the situation if i may ask?[/QUOTE]


As wizzardsk sais you have to try connect it holding volume up + lg bridge update error recovery.
Or what about hard reset ( hardreset.info/devices/lg/lg-k10/)?
Anyways if your phone connects and stays connected for more a second or two you might have a chance just PM me...
What coused the situation if i may ask?


---------- Post added at 07:38 PM ---------- Previous post was at 06:49 PM ----------

didn't know about LG Bridge,- yes, downloaded, installed and used the error recovery option while phone was in "update firmware" mode connected to usb... whew. hehe... may try rooting again... or not

bricked my LG K10 trying to root it (430dsY), the only thing I can do is connect the USB and hold it in "firmware update" mode, ... my command prompt with adb and fastboot is non-responsive... loaded TWRP through fastboot and ran rce.img,- twice, following instructions from a youtube.be link (cMipOfeW6B0)
after second flash of rce.img, it busted. yeah, I feel really stupid. I never got to super-user, any help?

I do have a backup image file made with TWRP on phone, (backup.ab) 437MB, anyway to flash the device from command prompt, get device to respond to command prompt?

"...Anyways if your phone connects and stays connected for more a second or two you might have a chance just PM me...
What caused the situation if i may ask?
 

123xdagsm

Senior Member
Mar 15, 2011
268
23
world
We have a same problem bruh I tried to boot on twrp.img after that my k10 shutsdown and when its reboot a notice say (your device is corrupted it cant be trusted and may not work properly) I try to recover but nothing happens its like bootlooping and no fastboot no download boot no recovery WTF. many tutorial on youtube and says boot to qualcom mode but I cannot locate the killer switch inside the k10 main board.
I could not find any way to solve the problem
I sold the phone to the same state, and bought a new phone
Perhaps there is a way!
 
Last edited:

janis2018

Member
Oct 15, 2017
15
0
Hello
My LG k10 430dsy is stuck on a bootloop and I cant boot into recovery and fatboot and download mode, I just get the message "Your device is corrupt. It cant be trusted and may not work proper"
no download mode no recovery and no fastboot mode
how can I fix this? I could use some help please, even if it means reformatting the phone any way possible, thanks.

I want to take of heads off for these who makes LG Nokia Samsung phones. I waste lots off money for phone and after 2 month it breaks. Its product what you can not sell afterwards. Somebody needs to die.
 

Ahmed Namees

New member
Oct 29, 2017
1
0
lg k430ds your device is corrupt and cannot go to download mode

I have the same problem :crying: with my k430dsy ( k10 )
no download mode like this video www youtube com /watch?v=s_bx9sr6lL8"
pleas if you found the solution send it to me on my gmail
"[email protected]
 

BrianIbrahims

Senior Member
Mar 1, 2016
54
11
Nairobi
brianibrahims.com
Hi, I had LG K430DSY and rooted it, with TWRP and Xposed.
The device is corrupted appears when you unlock the bootloader and allow TWRP to modify system.
It must be there if you want root.

I followed this procedure https://forum.xda-developers.com/lg-k10/how-to/friendly-root-method-lg-k8-k10-t3531223

You cant install TWRP permanently so you will need to port your TWRP.
https://forum.xda-developers.com/lg-k10/development/mtk-portable-twrp-porter-t3536123

STEP 1 - Get your phone's KDZ firmware
1. method:
- reboot your phone into download mode (http://www.hardreset.info/devices/lg...download-mode/)
- start LG Bridge, go to software update and chose update error recovery (right bottom corner).
- from here follow kappu's guide to get your .kdz file: https://forum.xda-developers.com/lg-...ridge-t3504497
- you can let lg bridge finish the flashing process, no data will be lost.

2. method:
- download firmware for your device:
k10: https://forum.xda-developers.com/lg-...g-k10-t3457319
k8: https://forum.xda-developers.com/lg-...mware-t3456467
- now you have your kdz however you better do the next step if you are not sure thats the exact firmware your device has
- use lg up (https://forum.xda-developers.com/lg-...ng-lg-t3517839) to flash that firmware on your device (just to make sure you are really using that particular firmware)
- all data will be lost

Now you have your kdz, lets extract the recovery image:

- download lg firmware extractor: https://forum.xda-developers.com/sho....php?t=2600575
- upack it somewhere and put the kdz file into that folder
- run "WindowsLGFirmwareExtract.exe"
- open your kdz file (first open button from above)
- tick the first entry under file name (the .dz file) and click on "Extract KDZ"
- you will get that .dz file extracted in your LGFirmwareExtract folder
- close LG Firmware extractor and open it again
- now open .dz file (second open button from above)
- find your stock recovery image under file name (usually it's "recovery_190464.bin"), tick that entry and click on "Extract DZ"
- your stock recovery image will be extracted in the LGFirmwareExtract folder.

Now you just copy this "recovery_190464.bin" (or whatever it's name is - just make sure it's a .bin file) into the "twrp_port" folder and run "twrp_port.bat"

YOU WILL NOW HAVE YOUR PORTED TWRP RECOVERY as yourTWRP.img

STEP 2 - UNLOCK YOUR BOOTLOADER
- in settings/about phone/software info tap on build number about 7 times unlock developer options
- in settings/developer options tick on "oem unlock" and "usb debugging" and untick "verify apps over usb"
- in settings/security tick on "unknown sources" and untick "verify apps"

- make sure you installed all the drivers for your mobile from lg's site
- set up adb/fasboot https://forum.xda-developers.com/sho....php?t=2588979
- go to the folder it's installed (in my case it's C:/adb - adb.exe and fastboot.exe supposed to be there) hold shift and right click "open cmd here"
- in the command window type "adb devices"
it will start adb services and will print a line like "...lgk350... or ...lgk420... lgk430, etc"
if you can't find your device there check device manager or google how to work things out
normally in device manager, you should find "LGE Mobile USB Serial Port" under Ports
- now reboot to fastboot mode typing the command: "adb reboot bootloader"
your phone should go blank and only print fastboot mode on the bottom of the screen
- check your fastboot connection:
type: "fastboot devices"
- In case you have a working adb and fastboot connection type
"fastboot oem unlock" - the phone will ask you if you really mean it, using the volume and the on/off buttons (twice) you can accept
you will lose all your data!!! and most likely lose warranty as well!!!
however your phone shell restart just fine (you have to manually restart it by taking out the battery or boot into twrp and reboot from there.
There should be some message during boot up that your system is vulnerable from now on.
- after reboot you may want to check if your bootloader is really unlocked:
get back to fastboot and type "fastboot getvar all"
and find the line which says if your bootloader is unlocked (if it's not you may repeat the process)

set up developer settings again:
- in settings/about phone/software info tap on build number about 10 times so you unlcok developer options
- in settings/developer options tick on "oem unlock" and "usb debugging" and untick "verify apps over usb"
- in settings/security tick on "unknown sources" and untick "verify apps"

STEP 3 - ROOTING
- put the recovery image that we ported earlier (e.g "yourTWRP.img") into your ADB folder (like c:\adb - where you opened command prompt earlier)
- Get back to fastboot again and boot to TWRP - type in cmd: "fastboot boot yourTWRP.img" (or whatever your TWRP image's filename is)
- on the first screen of the TWRP it's asking for password to decrypt data - just hit cancel

in case you have no device corrupt message during every boot up follow the next steps
- on the keep system read only? screen of the TWRP let it allow modifications (swipe!)
- reboot to System

you must see the device corrupt message during boot up -> you are ready to go for a root

the rooting part
- download the ramdisk compression exchanger: https://forum.xda-developers.com/app...anger-t3533327 (we need this because SuperSU can only work with gzip compressed ramdisks while we have lz4 compressed ones)
- download latest SuperSU TWRP flashable version: https://forum.xda-developers.com/app...lease-t3452703
- put this (rce_univ.zip) and latest SuperSU (i used v2.79) on your sd card (you need external sd because the internal sd is encrypted in TWRP)
- reboot your device into TWRP (through adb and fastboot as before)
- cancel decrypt data
- don't swipe on system modifying screen just click on "keep read only"
- go to backup, backup your boot image (tick only boot partition /untick the rest/ and select storage as micro sd card) in case anything goes wrong during the rest of the process you can always restore it
- go to install
- select storage and chose micro sd card
- install rce_univ.zip (it will recompress your ramdisk to gzip - so SuperSU can tweak it)
- when it's finished don't wipe or don't reboot! Go back (hit back button button) and install SuperSUxxx.zip
- go back again (without restart or wipe) and install rce.zip again (this will recompress your ramdisk to lz4)
- now you can reboot to system (without any wipe) - it will bootloop a few times, be patient!

If you have any problem with installing rce_univ.zip please post comments to it's thread:
https://forum.xda-developers.com/app...anger-t3533327

Please follow those instructions if you want to Root.

---------- Post added at 09:19 AM ---------- Previous post was at 09:16 AM ----------

Hello
My LG k10 430dsy is stuck on a bootloop and I cant boot into recovery and fatboot and download mode, I just get the message "Your device is corrupt. It cant be trusted and may not work proper"
no download mode no recovery and no fastboot mode
how can I fix this? I could use some help please, even if it means reformatting the phone any way possible, thanks.

Use LG Up to unbrick your device.
That's what i used then i had LG K430DSY

Install LG UP, then download the firmware and flash it with LG UP.

Alternatively,
Install LG Bridge, then make sure your device is switched off,
Hold the volume up key then plug in the usb cable to the phone
It will enter download mode.
USB Bridge option to fix recovery error, It will flash new KDZ firmware and your device will be unbricked.
 
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omidboxter

Member
May 14, 2017
6
0
I solved this problem, if you can inter download mode, you can do so.
1. download your model kdz file.
2. download lgup 1.14 and install it
3. download uppercut from this link (then your phone model will be detected by lgup1.14)
https://forum.xda-developers.com/lg-g5/development/uppercut-lgup-loader-g5-variants-t3511295
4. inter download mode (volume up+ connect with usb cable)
5. open lgup 1.14, thick upgrade in process, select your kdz file in file path and start.
 

berkantkz

Recognized Developer
Apr 7, 2014
1,254
1,179
Well, now I have the same problem. No way to get into download mode. Lg sucks...

We need to access to emmc and rewrite stock binaries. But there isn't any way to do it at home. We need something like this:
emmc-pro-600x400.jpg


And connect it to board like this:

BLENdQ.jpg



Then we can write stock boot/system/recovery etc..


Note: This scheme is for MTK chipsets.
 
Last edited:
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abdoh01

Senior Member
Hello
My LG k10 430dsy is stuck on a bootloop and I cant boot into recovery and fatboot and download mode, I just get the message "Your device is corrupt. It cant be trusted and may not work proper"
no download mode no recovery and no fastboot mode
how can I fix this? I could use some help please, even if it means reformatting the phone any way possible, thanks.

take a look on that method https://forum.xda-developers.com/lg-k10/how-to/guide-to-flash-official-firmware-lg-k-t3761728
 

fml4days

Member
Apr 7, 2021
6
0
Let me dig up this old thread real quick

I have same problem, Model LG K10 K430dsE

Phone has bootloop, says it's corrupted and not trusted etc

When i enter download mode it stays for 10s then bootloops again,
PC does not recognize the device but it did before, tried uninstalling/reinstalling LGUP/BRIDGE/USB DRIVERS etc

This happened after i tried to flash twrp.img


If anyone has any suggestion, answer below or reply here

Thread: https://forum.xda-developers.com/t/lg-k10-cannot-launch-twrp-or-download-mode-bootloop.4258773/
 

berkantkz

Recognized Developer
Apr 7, 2014
1,254
1,179
Let me dig up this old thread real quick

I have same problem, Model LG K10 K430dsE

Phone has bootloop, says it's corrupted and not trusted etc

When i enter download mode it stays for 10s then bootloops again,
PC does not recognize the device but it did before, tried uninstalling/reinstalling LGUP/BRIDGE/USB DRIVERS etc

This happened after i tried to flash twrp.img


If anyone has any suggestion, answer below or reply here

Thread: https://forum.xda-developers.com/t/lg-k10-cannot-launch-twrp-or-download-mode-bootloop.4258773/
There is no way to fix this. I've had the same and even though I tried to access to emmc directly, I was not unable to solve it. I had sent it to LG for repair and my device was repaired (motherboard changed).
 
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fml4days

Member
Apr 7, 2021
6
0
There is no way to fix this. I've had the same and even though I tried to access to emmc directly, I was not unable to solve it. I had sent it to LG for repair and my device was repaired (motherboard changed).
Thank you for the response bro, i have read many of your posts and im pretty sure this is 100% accurate
 

berkantkz

Recognized Developer
Apr 7, 2014
1,254
1,179
Thank you for the response bro, i have read many of your posts and im pretty sure this is 100% accurate
There might be a way for those who has advanced tools to modify/access the stuff on motherboard but since I don't have them, that's the only accurate thing I could say.

Thanks for trusting in me and you're welcome.
 

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  • 1
    Let me dig up this old thread real quick

    I have same problem, Model LG K10 K430dsE

    Phone has bootloop, says it's corrupted and not trusted etc

    When i enter download mode it stays for 10s then bootloops again,
    PC does not recognize the device but it did before, tried uninstalling/reinstalling LGUP/BRIDGE/USB DRIVERS etc

    This happened after i tried to flash twrp.img


    If anyone has any suggestion, answer below or reply here

    Thread: https://forum.xda-developers.com/t/lg-k10-cannot-launch-twrp-or-download-mode-bootloop.4258773/
    There is no way to fix this. I've had the same and even though I tried to access to emmc directly, I was not unable to solve it. I had sent it to LG for repair and my device was repaired (motherboard changed).
  • 3
    As wizzardsk sais you have to try connect it holding volume up + lg bridge update error recovery.
    Or what about hard reset ( http://www.hardreset.info/devices/lg/lg-k10/ )?
    Anyways if your phone connects and stays connected for more a second or two you might have a chance just PM me...
    What coused the situation if i may ask?
    1
    Hello
    My LG k10 430dsy is stuck on a bootloop and I cant boot into recovery and fatboot and download mode, I just get the message "Your device is corrupt. It cant be trusted and may not work proper"
    no download mode no recovery and no fastboot mode
    how can I fix this? I could use some help please, even if it means reformatting the phone any way possible, thanks.
    1
    I want to root lg k10 430dsy ando this commands
    1. Enable developer options on the lg K10
    2. Enable OEM unlocking and USB debugging
    3. Copy twrp.img to disk C: /
    3. Go to C: / and open command window. Enter: adb reboot bootloader (phone will start in fastboot mode)
    4. Once in the fastboot mode enter the command: fastboot boot twrp.img
    5. Once inside TWRP press cancel and then slide to allow modifications.
    6. Mount System, data and sdcard.
    7. Make BOOT-only backup (uncheck all other partitions)
    8. Mount MTP
    9. Copy BOOT backup from TWRP folder in our SD card (Boot.emmc.win) and rename bootlz4.img
    10. Copy to Boot-resources of CARLIV IMAGE KITCHEN
    11. Decompress with Carliv
    12. Open bootlz4 folder and find the file "boot.img-ramdisk-compress".
    13. Edit "boot.img-ramdisk-compress" with notepad ++ and change "lz4" to "gz"
    14. Save
    15. Recompress bootlz4.img
    16. Go to output folder and look for bootlz4xxxxx.img and rename it as bootgz.img
    17. Go to TWRP and restart in bootloader mode
    18. Write in command window: fastboot flash boot bootgz.img
    19. Then write in command window: fastboot boot twrp.img to return to TWRP

    I must flash bootgz_0.img in TWRP
    by cpatrick3000 method is false
    Plese use method gottlasz for root
    i can't aging boot twrp because error "larg size" and remove batterry and my device is bricked
    I do hard reset not work
    flash lg and lg up not work for 430dsy ony work lg Bridge i use lg bridge for flashing firmware but can't because trying to enter download mode and nothing happens, just text "download boot" download mode is bricked too
    My LG k10 430dsy is stuck on a bootloop.show logo lg then show message "Your device is corrupt. It cant be trusted and may not work proper"
    holding volume up and connecting using USB cable to PC only connecting two seconds then disconnect
    and trying to enter download mode and nothing happens, just text "download boot: after five seconds show message :your device is ........." then turn off bootloop
    still not found any way to go to fastboot
    1
    Hi, I had LG K430DSY and rooted it, with TWRP and Xposed.
    The device is corrupted appears when you unlock the bootloader and allow TWRP to modify system.
    It must be there if you want root.

    I followed this procedure https://forum.xda-developers.com/lg-k10/how-to/friendly-root-method-lg-k8-k10-t3531223

    You cant install TWRP permanently so you will need to port your TWRP.
    https://forum.xda-developers.com/lg-k10/development/mtk-portable-twrp-porter-t3536123

    STEP 1 - Get your phone's KDZ firmware
    1. method:
    - reboot your phone into download mode (http://www.hardreset.info/devices/lg...download-mode/)
    - start LG Bridge, go to software update and chose update error recovery (right bottom corner).
    - from here follow kappu's guide to get your .kdz file: https://forum.xda-developers.com/lg-...ridge-t3504497
    - you can let lg bridge finish the flashing process, no data will be lost.

    2. method:
    - download firmware for your device:
    k10: https://forum.xda-developers.com/lg-...g-k10-t3457319
    k8: https://forum.xda-developers.com/lg-...mware-t3456467
    - now you have your kdz however you better do the next step if you are not sure thats the exact firmware your device has
    - use lg up (https://forum.xda-developers.com/lg-...ng-lg-t3517839) to flash that firmware on your device (just to make sure you are really using that particular firmware)
    - all data will be lost

    Now you have your kdz, lets extract the recovery image:

    - download lg firmware extractor: https://forum.xda-developers.com/sho....php?t=2600575
    - upack it somewhere and put the kdz file into that folder
    - run "WindowsLGFirmwareExtract.exe"
    - open your kdz file (first open button from above)
    - tick the first entry under file name (the .dz file) and click on "Extract KDZ"
    - you will get that .dz file extracted in your LGFirmwareExtract folder
    - close LG Firmware extractor and open it again
    - now open .dz file (second open button from above)
    - find your stock recovery image under file name (usually it's "recovery_190464.bin"), tick that entry and click on "Extract DZ"
    - your stock recovery image will be extracted in the LGFirmwareExtract folder.

    Now you just copy this "recovery_190464.bin" (or whatever it's name is - just make sure it's a .bin file) into the "twrp_port" folder and run "twrp_port.bat"

    YOU WILL NOW HAVE YOUR PORTED TWRP RECOVERY as yourTWRP.img

    STEP 2 - UNLOCK YOUR BOOTLOADER
    - in settings/about phone/software info tap on build number about 7 times unlock developer options
    - in settings/developer options tick on "oem unlock" and "usb debugging" and untick "verify apps over usb"
    - in settings/security tick on "unknown sources" and untick "verify apps"

    - make sure you installed all the drivers for your mobile from lg's site
    - set up adb/fasboot https://forum.xda-developers.com/sho....php?t=2588979
    - go to the folder it's installed (in my case it's C:/adb - adb.exe and fastboot.exe supposed to be there) hold shift and right click "open cmd here"
    - in the command window type "adb devices"
    it will start adb services and will print a line like "...lgk350... or ...lgk420... lgk430, etc"
    if you can't find your device there check device manager or google how to work things out
    normally in device manager, you should find "LGE Mobile USB Serial Port" under Ports
    - now reboot to fastboot mode typing the command: "adb reboot bootloader"
    your phone should go blank and only print fastboot mode on the bottom of the screen
    - check your fastboot connection:
    type: "fastboot devices"
    - In case you have a working adb and fastboot connection type
    "fastboot oem unlock" - the phone will ask you if you really mean it, using the volume and the on/off buttons (twice) you can accept
    you will lose all your data!!! and most likely lose warranty as well!!!
    however your phone shell restart just fine (you have to manually restart it by taking out the battery or boot into twrp and reboot from there.
    There should be some message during boot up that your system is vulnerable from now on.
    - after reboot you may want to check if your bootloader is really unlocked:
    get back to fastboot and type "fastboot getvar all"
    and find the line which says if your bootloader is unlocked (if it's not you may repeat the process)

    set up developer settings again:
    - in settings/about phone/software info tap on build number about 10 times so you unlcok developer options
    - in settings/developer options tick on "oem unlock" and "usb debugging" and untick "verify apps over usb"
    - in settings/security tick on "unknown sources" and untick "verify apps"

    STEP 3 - ROOTING
    - put the recovery image that we ported earlier (e.g "yourTWRP.img") into your ADB folder (like c:\adb - where you opened command prompt earlier)
    - Get back to fastboot again and boot to TWRP - type in cmd: "fastboot boot yourTWRP.img" (or whatever your TWRP image's filename is)
    - on the first screen of the TWRP it's asking for password to decrypt data - just hit cancel

    in case you have no device corrupt message during every boot up follow the next steps
    - on the keep system read only? screen of the TWRP let it allow modifications (swipe!)
    - reboot to System

    you must see the device corrupt message during boot up -> you are ready to go for a root

    the rooting part
    - download the ramdisk compression exchanger: https://forum.xda-developers.com/app...anger-t3533327 (we need this because SuperSU can only work with gzip compressed ramdisks while we have lz4 compressed ones)
    - download latest SuperSU TWRP flashable version: https://forum.xda-developers.com/app...lease-t3452703
    - put this (rce_univ.zip) and latest SuperSU (i used v2.79) on your sd card (you need external sd because the internal sd is encrypted in TWRP)
    - reboot your device into TWRP (through adb and fastboot as before)
    - cancel decrypt data
    - don't swipe on system modifying screen just click on "keep read only"
    - go to backup, backup your boot image (tick only boot partition /untick the rest/ and select storage as micro sd card) in case anything goes wrong during the rest of the process you can always restore it
    - go to install
    - select storage and chose micro sd card
    - install rce_univ.zip (it will recompress your ramdisk to gzip - so SuperSU can tweak it)
    - when it's finished don't wipe or don't reboot! Go back (hit back button button) and install SuperSUxxx.zip
    - go back again (without restart or wipe) and install rce.zip again (this will recompress your ramdisk to lz4)
    - now you can reboot to system (without any wipe) - it will bootloop a few times, be patient!

    If you have any problem with installing rce_univ.zip please post comments to it's thread:
    https://forum.xda-developers.com/app...anger-t3533327

    Please follow those instructions if you want to Root.

    ---------- Post added at 09:19 AM ---------- Previous post was at 09:16 AM ----------

    Hello
    My LG k10 430dsy is stuck on a bootloop and I cant boot into recovery and fatboot and download mode, I just get the message "Your device is corrupt. It cant be trusted and may not work proper"
    no download mode no recovery and no fastboot mode
    how can I fix this? I could use some help please, even if it means reformatting the phone any way possible, thanks.

    Use LG Up to unbrick your device.
    That's what i used then i had LG K430DSY

    Install LG UP, then download the firmware and flash it with LG UP.

    Alternatively,
    Install LG Bridge, then make sure your device is switched off,
    Hold the volume up key then plug in the usb cable to the phone
    It will enter download mode.
    USB Bridge option to fix recovery error, It will flash new KDZ firmware and your device will be unbricked.
    1
    Well, now I have the same problem. No way to get into download mode. Lg sucks...

    We need to access to emmc and rewrite stock binaries. But there isn't any way to do it at home. We need something like this:
    emmc-pro-600x400.jpg


    And connect it to board like this:

    BLENdQ.jpg



    Then we can write stock boot/system/recovery etc..


    Note: This scheme is for MTK chipsets.
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