[Help!!] How to Unbrick Metro PCs LG K7 LGMS330!!

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Crayder

Member
Jun 7, 2016
6
0
@Everybody with the exact problem described by the author...

Do you guys have your bootloader unlocked, like with "fastboot oem unlock"?
Well, I do. And I just locked it back ("fastboot oem lock" ) and I think my phone is actually coming back on, it's currently on the "Android is starting" screen optimizing app 12 of 151.

I'm just hoping the lock command doesn't reset my device like the unlock command obviously does... I guess I'll edit this with my results in like an hour when this is done (not literally an hour)!

EDIT 1: 10 minutes later, it seems to be stuck on "Starting apps." after it finished optimizing.
EDIT 2: 10 more minutes later, I'm pretty sure it was indeed frozen on "Starting apps.", so I took the battery out. I turned it back on only to see it still freezing on the Metro PCS screen... Well damn.
EDIT 3: Yet another 10 minutes later, still stuck on the Metro PCS screen...
 
Last edited:

KyleBryant

Senior Member
May 31, 2011
814
292
34
Cincinnati, Ohio
Google Pixel 5
I don't really understand how you bricked it. I rooted with king root no problem, then downloaded and installed busybox. Granted I haven't found a recovery yet so I refuse to boot into stock recovery just in case. After a restart I still have root, never had to deal with a bootloader or anything. Is our bootloader unlocked?

Sent from my LGMS330 using XDA-Developers mobile app
 

goitalone

Senior Member
Jun 2, 2014
544
151
Port St. John
Whats that I smell? Hope for my soft bricked K7??? Many many thanks!

yes it should just flash it, it worked on mine

Which dll do i use when i goto flash? I only have ocassional access to a pc so i want to have all the files on my phone ready to go.

Got my MS330 fixed.... I downloaded the tot but found out it was corrupted somehow, but these guys fixed it for me using TeamViewer:

Check last few posts if you still need/wanna fix.

http://xdaforums.com/general/general/qa-metro-pcs-lg-k7-lgms330-t3331678/page26
 
Last edited:

goitalone

Senior Member
Jun 2, 2014
544
151
Port St. John
It was a system dump...not really sure what he did exactly...I think he dumped my system, then used part of the tot I downloaded from here to get me unbricked.

---------- Post added at 03:19 AM ---------- Previous post was at 03:16 AM ----------

I have the dlls he used, but I promised not to give them out.
 
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johnnyboy561

New member
Jun 19, 2016
1
0
Undo Kingroot damage on LG K7

This procedure is to for fixing issues after Rooting the phone with Kingroot and the device becomes unstable but boots fine.

If you ran a factory reset thinking that was going to fix the issues and now you are stuck in the Setup Wizard Loop
try finishing the setup five times. The fifth time it will take you to the home screen.

If you bricked the phone completely and cannot get to the Home screen you will need to put your phone into Download Mode and use the LG flash tool to flash the .KDZ Rom file. At the moment this file is unavailable to get from LG support. So bricked all the way, just wait for the realase of the file.

!!For future reference, when ever you root android 5.0 and above within Android (Kingroot method), You have to Enable OEM Unlock from Developer options right away ALWAYS or else if you restart the phone it will get bricked due to oem security software blocking root permissions!!. Saying that lets continue.

Thanks to ledzepman71 for providing the .IMG file for Sytem Image. Link he provided. (Thanks again, you saved my phone)

Tools used:
ADB_Driver_Win8_X644.zip
ADB_Fastboot.zip

Start by:

- Enable developer options. (Tap Build Version ten times, etc)
- OEM Unlock should be Enabled or else you would not be on that screen (Bricked)
- Enable USB debugging
- Download ADB_Fastboot.zip and ADB_Driver_Win8_X644.zip (or find the one for your Win Version) and extract.
- Place the system image from ledzepman71 in the folder ADB_Fastboot.
- Run MAF32 as Administrator (From ADB_Fastboot)
- Type "adb reboot bootloader" (check the screen on your phone and allow the debug permision, run same command again after)
- Phone will restart to the Bootloader screen.
- At this point now install ADB Drivers. I am providing the ones for Windows 8.1 X64. Manually go to device manager and located the device named Android (with the yellow exclamation mark) and update Driver with the one provided in the folder "ADB Driver Win 8.1 X64"
- Now back on the computer type: "fastboot flash system system.img" (Proccess will take some time, 8 out 8 steps)
- finally run "fastboot oem lock"
- Now disconnect the phone and remove battery to power off phone, then put battery back in again.
- Boot your phone in to recovery like this:
Press and hold the Volume Down and the Power buttons simultaneously until the LG logo is displayed on your screen.
Then release and re-hold the Power button while still holding Volume Down.
Keep holding the buttons until the Recovery Mode menu appears.
- Now perform Factory Reset and done!

You need three links for this fix. I'm a new User for XDA, if you need the links to the files message me. I cannot post links yet because I'm a new user. Need to do 10 posts first.
 
Last edited:

goitalone

Senior Member
Jun 2, 2014
544
151
Port St. John
This procedure is to for fixing issues after Rooting the phone with Kingroot and the device becomes unstable but boots fine.

If you ran a factory reset thinking that was going to fix the issues and now you are stuck in the Setup Wizard Loop
try finishing the setup five times. The fifth time it will take you to the home screen.

If you bricked the phone completely and cannot get to the Home screen you will need to put your phone into Download Mode and use the LG flash tool to flash the .KDZ Rom file. At the moment this file is unavailable to get from LG support. So bricked all the way, just wait for the realase of the file.

!!For future reference, when ever you root android 5.0 and above within Android (Kingroot method), You have to Enable OEM Unlock from Developer options right away ALWAYS or else if you restart the phone it will get bricked due to oem security software blocking root permissions!!. Saying that lets continue.

Thanks to ledzepman71 for providing the .IMG file for Sytem Image. Link he provided. (Thanks again, you saved my phone)

Tools used:
ADB_Driver_Win8_X644.zip
ADB_Fastboot.zip

Start by:

- Enable developer options. (Tap Build Version ten times, etc)
- OEM Unlock should be Enabled or else you would not be on that screen (Bricked)
- Enable USB debugging
- Download ADB_Fastboot.zip and ADB_Driver_Win8_X644.zip (or find the one for your Win Version) and extract.
- Place the system image from ledzepman71 in the folder ADB_Fastboot.
- Run MAF32 as Administrator (From ADB_Fastboot)
- Type "adb reboot bootloader" (check the screen on your phone and allow the debug permision, run same command again after)
- Phone will restart to the Bootloader screen.
- At this point now install ADB Drivers. I am providing the ones for Windows 8.1 X64. Manually go to device manager and located the device named Android (with the yellow exclamation mark) and update Driver with the one provided in the folder "ADB Driver Win 8.1 X64"
- Now back on the computer type: "fastboot flash system system.img" (Proccess will take some time, 8 out 8 steps)
- finally run "fastboot oem lock"
- Now disconnect the phone and remove battery to power off phone, then put battery back in again.
- Boot your phone in to recovery like this:
Press and hold the Volume Down and the Power buttons simultaneously until the LG logo is displayed on your screen.
Then release and re-hold the Power button while still holding Volume Down.
Keep holding the buttons until the Recovery Mode menu appears.
- Now perform Factory Reset and done!

You need three links for this fix. I'm a new User for XDA, if you need the links to the files message me. I cannot post links yet because I'm a new user. Need to do 10 posts first.

Anyone want a free Rooted Tribute 5 mobo with bad ESN?



Sent from my LGMS330 using XDA-Developers mobile app
 
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  • 3
    I didn't use a DLL file, my program doesn't need it, you can try LGUP

    Sent from my SM-G935T using Tapatalk

    You may have given us a solution to unbricking the k7! but just as the rest I am having trouble without the DLL file. Can you pm the program that you used to flash your phone? Thanks.
    1
    Here is the system.img from the LGMS330 tot file.
    https://app.box.com/s/vtg4u46m0xj46amwjvvfrwrznpwjfjtp


    Here is the system.img from the LGK330 from my phone.
    https://app.box.com/s/67pywf2nlmgcdz47mu7q68dtypvt0dy3
    1
    If someone with at working k7 could run the commands on post 19 we would know for sure.
    Intuition tells me /dev/block/mmcblk0, but I'm not sure. step 2 for boost mobile says:
    When mine was working this was the block layout:
    major minor #blocks name

    253 0 359144 zram0
    179 0 7634944 mmcblk0
    179 1 65536 mmcblk0p1
    179 2 512 mmcblk0p2
    179 3 1024 mmcblk0p3
    179 4 512 mmcblk0p4
    179 5 2048 mmcblk0p5
    179 6 512 mmcblk0p6
    179 7 1024 mmcblk0p7
    179 8 512 mmcblk0p8
    179 9 2048 mmcblk0p9
    179 10 1536 mmcblk0p10
    179 11 1536 mmcblk0p11
    179 12 512 mmcblk0p12
    179 13 512 mmcblk0p13
    179 14 1536 mmcblk0p14
    179 15 512 mmcblk0p15
    179 16 512 mmcblk0p16
    179 17 512 mmcblk0p17
    179 18 512 mmcblk0p18
    179 19 512 mmcblk0p19
    179 20 1024 mmcblk0p20
    179 21 512 mmcblk0p21
    179 22 6656 mmcblk0p22
    179 23 6144 mmcblk0p23
    179 24 512 mmcblk0p24
    179 25 1536 mmcblk0p25
    179 26 1024 mmcblk0p26
    179 27 1024 mmcblk0p27
    179 28 6144 mmcblk0p28
    179 29 6144 mmcblk0p29
    179 30 10240 mmcblk0p30
    179 31 8192 mmcblk0p31
    259 0 16384 mmcblk0p32
    259 1 16384 mmcblk0p33
    259 2 16384 mmcblk0p34
    259 3 24576 mmcblk0p35
    259 4 8192 mmcblk0p36
    259 5 2584576 mmcblk0p37
    259 6 204800 mmcblk0p38
    259 7 4616192 mmcblk0p39
    259 8 8175 mmcblk0p40
    179 32 4096 mmcblk0rpmb
    If anyone has had success with the pair of LG_Root techniques on post 25, please say so.
    Mine won't get past step one and I am considering open a new thread to address my personal circumstance.

    I was able to pull the information from my wife's k7. I was able to get to step 11 but even with knowing the dev block it still fails at that step.
    lrwxrwxrwx root root 1970-01-11 21:26 DDR -> /dev/block/mmcblk0p13
    lrwxrwxrwx root root 1970-01-11 21:26 aboot -> /dev/block/mmcblk0p5
    lrwxrwxrwx root root 1970-01-11 21:26 abootbak -> /dev/block/mmcblk0p9
    lrwxrwxrwx root root 1970-01-11 21:26 boot -> /dev/block/mmcblk0p33
    lrwxrwxrwx root root 1970-01-11 21:26 cache -> /dev/block/mmcblk0p38
    lrwxrwxrwx root root 1970-01-11 21:26 config -> /dev/block/mmcblk0p21
    lrwxrwxrwx root root 1970-01-11 21:26 devinfo -> /dev/block/mmcblk0p20
    lrwxrwxrwx root root 1970-01-11 21:26 drm -> /dev/block/mmcblk0p28
    lrwxrwxrwx root root 1970-01-11 21:26 eksst -> /dev/block/mmcblk0p19
    lrwxrwxrwx root root 1970-01-11 21:26 encrypt -> /dev/block/mmcblk0p18
    lrwxrwxrwx root root 1970-01-11 21:26 factory -> /dev/block/mmcblk0p35
    lrwxrwxrwx root root 1970-01-11 21:26 fota -> /dev/block/mmcblk0p23
    lrwxrwxrwx root root 1970-01-11 21:26 fsc -> /dev/block/mmcblk0p15
    lrwxrwxrwx root root 1970-01-11 21:26 fsg -> /dev/block/mmcblk0p14
    lrwxrwxrwx root root 1970-01-11 21:26 grow -> /dev/block/mmcblk0p40
    lrwxrwxrwx root root 1970-01-11 21:26 keystore -> /dev/block/mmcblk0p17
    lrwxrwxrwx root root 1970-01-11 21:26 laf -> /dev/block/mmcblk0p32
    lrwxrwxrwx root root 1970-01-11 21:26 misc -> /dev/block/mmcblk0p30
    lrwxrwxrwx root root 1970-01-11 21:26 modem -> /dev/block/mmcblk0p1
    lrwxrwxrwx root root 1970-01-11 21:26 modemst1 -> /dev/block/mmcblk0p10
    lrwxrwxrwx root root 1970-01-11 21:26 modemst2 -> /dev/block/mmcblk0p11
    lrwxrwxrwx root root 1970-01-11 21:26 mpt -> /dev/block/mmcblk0p36
    lrwxrwxrwx root root 1970-01-11 21:26 persist -> /dev/block/mmcblk0p31
    lrwxrwxrwx root root 1970-01-11 21:26 raw_resources -> /dev/block/mmcblk0p26
    lrwxrwxrwx root root 1970-01-11 21:26 raw_resourcesbak -> /dev/block/mmcblk0p27
    lrwxrwxrwx root root 1970-01-11 21:26 rct -> /dev/block/mmcblk0p24
    lrwxrwxrwx root root 1970-01-11 21:26 recovery -> /dev/block/mmcblk0p34
    lrwxrwxrwx root root 1970-01-11 21:26 rpm -> /dev/block/mmcblk0p4
    lrwxrwxrwx root root 1970-01-11 21:26 rpmbak -> /dev/block/mmcblk0p8
    lrwxrwxrwx root root 1970-01-11 21:26 sbl1 -> /dev/block/mmcblk0p2
    lrwxrwxrwx root root 1970-01-11 21:26 sbl1bak -> /dev/block/mmcblk0p6
    lrwxrwxrwx root root 1970-01-11 21:26 sec -> /dev/block/mmcblk0p16
    lrwxrwxrwx root root 1970-01-11 21:26 sns -> /dev/block/mmcblk0p29
    lrwxrwxrwx root root 1970-01-11 21:26 spare1 -> /dev/block/mmcblk0p22
    lrwxrwxrwx root root 1970-01-11 21:26 spare2 -> /dev/block/mmcblk0p25
    lrwxrwxrwx root root 1970-01-11 21:26 ssd -> /dev/block/mmcblk0p12
    lrwxrwxrwx root root 1970-01-11 21:26 system -> /dev/block/mmcblk0p37
    lrwxrwxrwx root root 1970-01-11 21:26 tz -> /dev/block/mmcblk0p3
    lrwxrwxrwx root root 1970-01-11 21:26 tzbak -> /dev/block/mmcblk0p7
    lrwxrwxrwx root root 1970-01-11 21:26 userdata -> /dev/block/mmcblk0p39
    1
    I have been going nuts trying to figure this one out. Could you please PM me with the name of the program that will flash my K7. Thank you so much.

    I am checking XDA every hour for update. That's how desperate I am right now after bricking 2 device :(