Develop Bugs

[Q] LG Optimus E975 Security Error

Hello,
I badly need your help guys. My sister accidentally uninstalled an important file on my LG E975 and now, its not booting up. I'm getting a Security Error.
I looked for a solution and found out about KDZ method. I was told to charge my battery first but when tried, it seemed not charging. What should I do? Thanks..

It should charge... Aren't you getting the charging screen ? (when your phone is off and you connect it to the charger, it doesn't boot, there's a different screen), don't you have it?

TheJoker0 said:
It should charge... Aren't you getting the charging screen ? (when your phone is off and you connect it to the charger, it doesn't boot, there's a different screen), don't you have it?
Click to expand...
Click to collapse
Thanks for the reply. Yes, Im not getting the charging screen. After turning off the phone and connect it to the charger, what happen is. It automatically turns on, flashes the LG logo, then it shows Security Error with LG Logo, then it goes the same thing over and over again..

I don't really know a solution but I would leave it like that for like 2-3 hours and then flash the kdz..

Tab keep on restarting HELP

Tab S 8.4
I`ve disconnect and connect the battery connector and now my tablet become so much worst. Restarting itself every few seconds and shows different battery percentage. The only thing I did was disconnect and connect the battery connector. Why it keep on restarting itself? It become very hot too. Can someone here help me, please?
edit: also turn off itself. become 0% even after charge shows 100% then keep on rebooting..

ayenzel said:
Tab S 8.4
I`ve disconnect and connect the battery connector and now my tablet become so much worst. Restarting itself every few seconds and shows different battery percentage. The only thing I did was disconnect and connect the battery connector. Why it keep on restarting itself? It become very hot too. Can someone here help me, please?
edit: also turn off itself. become 0% even after charge shows 100% then keep on rebooting..
Click to expand...
Click to collapse
Try this:
http://www.hardreset.info/devices/samsung/samsung-galaxy-tab-s-84-wifi/
Succes

ludoke said:
Try this:
http://www.hardreset.info/devices/samsung/samsung-galaxy-tab-s-84-wifi/
Succes
Click to expand...
Click to collapse
I have already tried all the method, but still the same. I guess its a hardware problem. Cant find any solution on the internet..

ayenzel said:
I have already tried all the method, but still the same. I guess its a hardware problem. Cant find any solution on the internet..
Click to expand...
Click to collapse
If it's still under warranty -- send it in. I'd put a custom rom on mine, and it wasn't even a question. It was under warranty and restarting and having battery issues. They gave me a shipping label, I sent it in, and a week later -- it is running perfectly after they replaced the part necessary.

Is my 1+3 dead!?

Hi everyone,
I'm experiencing pretty silly situation with my phone.
So the story begins here:
I was surfing the web while listening to music in the bus when suddenly my oneplus3 randomly turned off and I couldn't turn it back on. (I was on something around 15% on battery so it's not a low battery problem) I tried to turn it on several times and after holding the power button for like 10secs it turned on, and after pressing the power button again (because I needed to get past unlocked bootloader screen and dm-verity) I saw a boot screen. The capacitive button leds turned on and after 3 secs it turned off again, so I started worrying... After a while I tried to access the recovery, but no luck at all. It powers it self off after bootscreen. So I started to research. Tried to flash the entire OS, partritions with msmdownload tool. After several unsuccessful flashes (firehosewritedata failed sometimes while writing userimg or system.img or boot.img) I did get the download complete green text message, and after successful flash, the white LED turned on, even the phone was not plugged in USB or charger and turned off. The screen is completely black and the white led just flashes constantly without blinking or anything. I could only turn the led off by pressing the power button for another 10 secs. And after turning the phone off, problem still remains. After oneplus logo phone shuts down...
I can access bootloader.
And after flashing everything should be on stock, because now I only got screen only about bootloader, no dm-verity..
And of course - I still cannot access the recovery.
p.s. I tried to do the power cycle (as the tech support told me) but still no luck at all.

did u tried the full msmdownload tool (1gb) or the 55mb version ?

Mukthar. said:
did u tried the full msmdownload tool (1gb) or the 55mb version ?
Click to expand...
Click to collapse
1GB version

djemm1996 said:
1GB version
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Click to collapse
Are you sure that you did it right? Did your phone show up as mentioned in the instructions?

Puddi_Puddin said:
Are you sure that you did it right? Did your phone show up as mentioned in the instructions?
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Click to collapse
Of course. Everything is done right. I also get that green "download complete" message.
p.s I also opened the phone. water indicators are fine and no major defects what can i see by eye... All connectors are good as well.

Puddi_Puddin said:
Are you sure that you did it right? Did your phone show up as mentioned in the instructions?
Click to expand...
Click to collapse
And yes, phone was connected right. :good: installed drivers with test mode on Win10 and got Snapdragon device in COM devices. As well the MsmDownload tool shows up my device in port #20

Any ideas?

djemm1996 said:
Any ideas?
Click to expand...
Click to collapse
Follow method 2 from the Hard Brick guide by Naman Bhalla and try two or three times.
Sometimes it takes more than once for restoration.

Since you opened the phone, i think your warranty is gone now.
If the msmdownloadtool didnt help you, there is nothing you can do i think.

try to flash again, and if it still maybe something short inside.
if you have disassembly your phone, try disconnecting various flex cable like camera, sim slot etc that connect to the mainboard, that doesn't prevent device from powered on, then try to turning it on.
if it still, check your mainboard, if you don't know how, send it back.

AcidNoteZ said:
Since you opened the phone, i think your warranty is gone now.
If the msmdownloadtool didnt help you, there is nothing you can do i think.
Click to expand...
Click to collapse
Is ir really gone? There is a still warranty void sticker on the screw there, but of course it's possible to see by eye that the phone has been opened.
I have an appointment with Level2 tech support @oneplus, they are going to remotely flash the entire OS, but do you think they are using pretty similar technique as the msmdownloadtool?

djemm1996 said:
Is ir really gone? There is a still warranty void sticker on the screw there, but of course it's possible to see by eye that the phone has been opened.
I have an appointment with Level2 tech support @oneplus, they are going to remotely flash the entire OS, but do you think they are using pretty similar technique as the msmdownloadtool?
Click to expand...
Click to collapse
They are doing the same thing like you did.
I already had a session since i thought they are going to do something "special"
You can try the remote session but im afraid that wont help you if you already did it multiple times.

What about battery? Charged?

drmuruga said:
What about battery? Charged?
Click to expand...
Click to collapse
Yes battery is charged of course. It's just doint the same thing. Turns on, after a while when bootscreen comes it just turns off and white notification led appears, after that nothing.

I tried to flash it with tool using method 2 for like 15 times with "download complete" messages, but still no luck at all. Tried to erase partritions with fastboot, flashing just only recovery, modded recovery etc. but I still cannot access the recovery nor system. I just don't get it why the phone does not boot into recovery if I flash it or boot it straight away, It just only turns off and that's it. nothing more. Only black screen and white led lighting all the time (after a while the phone turns warm).
I have read all the MsmDownloadTool thread in "Mega Unbrick thread" and saw that few people have experienced the very same situation as me, so I was wondering if there is any fix for this? It's so strange that I was just surfing the Web and it just turned off by it self with like static image for miliseconds and after that just black screen.
There should be any fix. I guess that it's just a partition error...

Ok, not good news. I had a little remote session before a while. They says it's already a hardware problem.

AcidNoteZ said:
Since you opened the phone, i think your warranty is gone now.
If the msmdownloadtool didnt help you, there is nothing you can do i think.
Click to expand...
Click to collapse
Pfffft you think manufacturers notice when you take apart phones? Hell I took apart my Xperia Z2 because it was having problems and then glued it back together with cyanoacrylate hahahaha (worst thing to do but wtv) and no one noticed though it was seemless and everything looked perfect

Guys, I've got something for you! Not really the same thing as Naman.
p.s. not saying its original hehehehe keep safe

man i got a very similiar problem but my op3 has a black screen i was also on low battery around 5-15% when my phone went off after i was in twrp

Actually I was on twrp too! Also I have recently noticed that recovery loading speed was far too long than normal one. I'm talking for something about 5-7 minutes after reboot into twrp. So, who knows what did happen. Just made an RMA request. Will see how it goes.
Anyway, I was on stock 7.1.1 and it's just rooted with custom recovery and that's it! Nothing more! Is that just a factory failure or maybe it's caused by drops i have had? Nothing serious for a 4-5 times for a half year. Of course I have used it even in winter when the snowflakes are coming down from the sky and little rain. Btw, these liquid indicators are white, so all safe. ::laugh:
A
makadama said:
man i got a very similiar problem but my op3 has a black screen i was also on low battery around 5-15% when my phone went off after i was in twrp
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Click to collapse

Device stuck in loop.. "Mi Logo" then battery icon.. this keeps repeating.

Device stuck in loop.. "Mi Logo" then battery icon.. this keeps repeating.
Friends,
My redmi note 5 pro was 50% battery and it suddenly turned off. After that when power connected no response. Connect via USB and Mi Logo appears first, then the battery icon with a flash symbol in middle. This repeats continuously. Some help, please ?
The phone is not rooted. Still in warranty period. No recent update. The last update was 1 month ago. No glitches after that.

JvLTech said:
Friends,
My redmi note 5 pro was 50% battery and it suddenly turned off. After that when power connected no response. Connect via USB and Mi Logo appears first, then the battery icon with a flash symbol in middle. This repeats continuously. Some help, please ?
The phone is not rooted. Still in warranty period. No recent update. The last update was 1 month ago. No glitches after that.
Click to expand...
Click to collapse
Seems like your battery is dead, try charging it for some hours.

Any solution. I'm also having the same issue.

JvLTech said:
Friends,
My redmi note 5 pro was 50% battery and it suddenly turned off. After that when power connected no response. Connect via USB and Mi Logo appears first, then the battery icon with a flash symbol in middle. This repeats continuously. Some help, please ?
The phone is not rooted. Still in warranty period. No recent update. The last update was 1 month ago. No glitches after that.
Click to expand...
Click to collapse
Hi, I have same or exact as you mention it.
do you solve already
thanks
---------- Post added at 07:04 PM ---------- Previous post was at 07:00 PM ----------
P12AV33N said:
Seems like your battery is dead, try charging it for some hours.
Click to expand...
Click to collapse
let me try it

P12AV33N said:
Seems like your battery is dead, try charging it for some hours.
Click to expand...
Click to collapse
I've try charging all night long and keep restarting also no luck.
want to posted an video but sadly cannot, pm if anybody want show the video of the phone

Same problem here
My whyred sometimes charges randomly but most of the time it just doesn't charge at all. Ampere app says my battery has good health. I tried other chargers but they didn't work top. I don't know what to do. I charge my phone every night but this started happening yestarday

So any solutions?
Thanks

jyothis.m said:
Any solution. I'm also having the same issue.
Click to expand...
Click to collapse
did you have solutions already?

Still waiting if there anybody can help

More than 1 month but still "dead"....
anybody can help?

I sent the phone back to amazon and they sent me a new one, neither they can solve the issue

JvLTech said:
Friends,
My redmi note 5 pro was 50% battery and it suddenly turned off. After that when power connected no response. Connect via USB and Mi Logo appears first, then the battery icon with a flash symbol in middle. This repeats continuously. Some help, please ?
The phone is not rooted. Still in warranty period. No recent update. The last update was 1 month ago. No glitches after that.
Click to expand...
Click to collapse
I am facing the same problem right now what did you do can you please help me shall I go to the service centre for help please help me I am worried same phone

rohan239492 said:
I am facing the same problem right now what did you do can you please help me shall I go to the service centre for help please help me I am worried same phone
Click to expand...
Click to collapse
Woh.. its been a long time, though I am still using the same phone. ?
Try a hard reset first, if it doesn't help run to the service center. Don't worry about your data, service technician can easily recover it.
Back then My phone came into contact with sweat moisture and it fried few chips on the mother board.
Fluid damage is not covered under warranty, yet they gave me 50% discount. ?
All the data was restored afterwards and the phone still working fine.?
Hope you will find a solution soon. ?

Hey, it might be a bit late but i found a solution: i charged my phone for a few hours in fastboot mode (volume down + power button). Then turn it off and on again.

lisayaga said:
Hey, it might be a bit late but i found a solution: i charged my phone for a few hours in fastboot mode (volume down + power button). Then turn it off and on again.
Click to expand...
Click to collapse
i had this problem yesterday, until today i had it 4 times, i always managed to restart it randomly, but today it remained in this loop, i can't even activate fastboot mode.
I attach the photo of the battery symbol that shows up when I try to turn it on and when I put it in charge, in loop

have you fix it?
ErDuardo said:
i had this problem yesterday, until today i had it 4 times, i always managed to restart it randomly, but today it remained in this loop, i can't even activate fastboot mode.
I attach the photo of the battery symbol that shows up when I try to turn it on and when I put it in charge, in loop
Click to expand...
Click to collapse

Same issue here. Any help will be greatly appreciated!

I was also facing the similar issue yesterday. Actually my phone fell down while charging after that it's started behaving like that and I kept on charging for 2 hours and tried to switch to fastboot mode still no luck and after that I left the phone idle for sometime witout charging and I gently pressed all the edges of my phone and tried fastboot mode and it's started working.
I know the solution which I gave looks silly but it's worked for me

Satya1247 said:
I was also facing the similar issue yesterday. Actually my phone fell down while charging after that it's started behaving like that and I kept on charging for 2 hours and tried to switch to fastboot mode still no luck and after that I left the phone idle for sometime witout charging and I gently pressed all the edges of my phone and tried fastboot mode and it's started working.
I know the solution which I gave looks silly but it's worked for me
Click to expand...
Click to collapse
hey i have the same problem with my redmi k20 pro battery icon is flashing again and again and i cant switch to fastboot mode pls suggest something

remove the resistor in the battery and replace it with a thin wire, just jumper the two terminals

[SOLVED][Q] CQATest application appears with emergency led flash light

Hi,
I'm wondering if there's anyone else who is facing this problem or I'm just unlucky.
On last Sunday, when I was listening to YouTube Music at a low battery (around 15%), after a while the phone shut itself off. I guess it was just the phone ran out of battery so I tried to charge it. But the moment I plugged in the charger, the hidden emergency flash light in the front turned on (the one on top right). When the phone successfully booted up, an application called CQATest appeared with a notification. The phone won't charge and take SIM card anymore since then.
I've done some research and tried many methods to fix it, including reboot in the recovery, factory reset, using adb to change boot mode, reflash the rom, disabling the CQATest app. None of them could solve my problem. Disabling the CQATest app does let me to have signal again, but I still cannot get the phone charge. It shows Turbo Power connected, but not charging.
Is there anybody facing the same issue, or even better, have a solution?
Thank you.
Update: I found a solution for this. I put my phone to fastboot mode and charge it from there, overnight. Next morning, it's working normal again.

You can always try a custom ROM. And make sure to format every partition in TWRP before - format, not just wipe.
If that works you can try other stuff. If not you have a hardware issue is guess and only a phone repair could fix that.
PS: try a different charger. If it's only not charging it might be an issue there. And have you tried to charge it while the device is shut down?

Artim_96 said:
You can always try a custom ROM. And make sure to format every partition in TWRP before - format, not just wipe.
If that works you can try other stuff. If not you have a hardware issue is guess and only a phone repair could fix that.
PS: try a different charger. If it's only not charging it might be an issue there. And have you tried to charge it while the device is shut down?
Click to expand...
Click to collapse
Thank you for your reply. Yes I did try another charger. However I'm using a Qualcomm qualified charger so I don't think that's an issue. I brought it to UbreakIfix and they told me it's a motherboard problem so the only way to fix it is to change the motherboard. It'll cost a phone to do that. I'm just wandering if there's any body else who is having the same issue. Because my problem appeared out of no where.

That's normal. Hardware problems often appear out of nowhere all the sudden. And it's always hard the really on them down to a source.
And yes, repairs for not typical phones are always expensive. On my first Z Play the screen cracked. Seeing the price of a repair and realising I could get an unused Z2 Play for the same money you can guess what I did. Can't say I regret it too much.