Develop Bugs

[HOWTO] Hard Bricking E975

Yesterday I manage to hard-brick my Optimus G (intl) E975. :crying:
The process was quite simple, root, unlock bootloader, flash CyanogenMod, flash custom kernel F93, install FauxClock (paid version on Google Play). In this app (FauxClock), in the screen gamma settings you have an option to download a kernel enhancer. I downloaded the kernel enhancer provided in the app and its name was something like "all_kernels_enhancements_mako.zip". After download, I booted in recovery and flashed that "all kernels enhancement" .... and hard bricked it was!
The phone now won't start and all it does is to blink an Red Led (of death). I can't go intro recovery with any button combination. Only the red led. I hopped that it lacks battery juice and I put it overnight for charging but no change.
It looks like the zip was meant for the Mako (Nexus 4) kernels, not for L975
I searched on the web how to re-write phone's boot images and I found that there is a JTAG method for that using a device called RIFF. It implies that you open your phone and connect some plugs and re-write the nand flash. I searched some more and I found a guy in my town that does this kind of things. I met that guy and, for now, it seems that the re-write process is available only for the e970, e971, e973 variants of the phone, but he will try it on e975 anyways.
Right now I'm waiting some news for this guy. Keep my fingers crossed.
Update 1:
That guy with the JTAG has a hard time making my phone to boot.
Meanwhile I contacted LG service and they told me that they can try to fix it but there is a chance that the mainboard has to be replaced(?) as the phone is not recognized by the computer. They also told me that hard-bricking can appear even when flashing official firmwares.
As I am in a big hurry with this repairing stuff I don't know what to do.
Update 2:
In the end, after 8 hours of hard working, that guy made the best finding the right file to flash with some international help, made the right JTAG shouldering and finally, IT'S ALIVE!
My dear phone is now up and running. I just rooted it, unlocked it and flashed CM 10.1 again with the F93 kernel. Fortunately I made a backup 5 days ago so I lost almost nothing.
It was a good lesson and a first in Romania

goodmamba said:
Yesterday I manage to hard-brick my Optimus G (intl) E975. :crying:
The process was quite simple, root, unlock bootloader, flash CyanogenMod, flash custom kernel F93, install FauxClock (paid version on Google Play). In this app (FauxClock), in the screen gamma settings you have an option to download a kernel enhancer. I downloaded the kernel enhancer provided in the app and its name was something like "all_kernels_enhancements_mako.zip". After download, I booted in recovery and flashed that "all kernels enhancement" .... and hard bricked it was!
The phone now won't start and all it does is to blink an Red Led (of death). I can't go intro recovery with any button combination. Only the red led. I hopped that it lacks battery juice and I put it overnight for charging but no change.
It looks like the zip was meant for the Mako (Nexus 4) kernels, not for L975
I searched on the web how to re-write phone's boot images and I found that there is a JTAG method for that using a device called RIFF. It implies that you open your phone and connect some plugs and re-write the nand flash. I searched some more and I found a guy in my town that does this kind of things. I met that guy and, for now, it seems that the re-write process is available only for the e970, e971, e973 variants of the phone, but he will try it on e975 anyways.
Right now I'm waiting some news for this guy. Keep my fingers crossed.
Click to expand...
Click to collapse
I don't have much experience but i have understood that JTAG is compatible with all the android smartphones, even there's a video in youtube explaining the process. I hope that works for you mate, I have my E977 hard bricked too but I'll take to SAT in a few hours. Good luck :highfive:
This is the video http://www.youtube.com/watch?v=5NRXhJxbtYY

Unreal_Shogo said:
I don't have much experience but i have understood that JTAG is compatible with all the android smartphones, even there's a video in youtube explaining the process. I hope that works for you mate, I have my E977 hard bricked too but I'll take to SAT in a few hours. Good luck :highfive:
This is the video http://www.youtube.com/watch?v=5NRXhJxbtYY
Click to expand...
Click to collapse
Thanks Unreal_Shogo,
I saw that movie yesterday and this is how I found out that there is a solution for my problem.

A few notes on hard bricked LG E975 in general:
- after a phone is bricked, don't try anymore to charge it, because it will only consume the rest of the battery. The phone after that many hours of charging it had only 3 volts instead of 3.7 minimum. Android phones control the charging process by software, not hardware. And if you push the power or you will connect the phone to the charger it will consume completely the battery and you can't stop it if you can't disassembly the phone and disconnect the battery
- this model, compared with e970, e971, e973, it is different and harder to solder the wires, because the JTAG connections are on the other said of the board, not like the one from the video.
- the boot it is not compatible with the other models and it is very hard to find the correct files. But with some stubbornness there is nothing you can't do
Not all the androids can be repaired with JTAG because the manufacturer sometimes disable it. So never be so confident, that you can repaire the phone with a few bucks and no need to replace the mainboard. For example Motorola had only 2 or 3 models witch can be repaired.
And finally I am glad that you already customized your phone like before you bricked the phone and you came to me.
Sent from my GT-I9300 using Tapatalk 2

Thank you ZiDanRO, you made the impossible, possible

Unbrick Optimus G E975 - restore backup files possible?
goodmamba said:
Thank you ZiDanRO, you made the impossible, possible
Click to expand...
Click to collapse
Hello all,
I bicked my E975 using FreeGee app. I tried to unlock it and it gave me a error message. Than I tried to restore backup and I get error message, again. The next thing I did, reboot the phone. After reboot, phone did not power on.
I have all backup files (.img files includes m9kefs, aboot, boot, recovery, sbl... etc) and I need to find a way to restore it.
When I connect phone to PC, it detect it as QDLoader device.
When I plug-in USB, charging led powers up for 3 seconds and goes off. At the same time I can hear windows sound (plug-in and plug-out USB sound). I have downloaded KDZ image and KDZ updater but it did not detect my phone.
I gave phone to friend of mine, he have riff box. He tried to resurect it but riff did not detect (as he said) the phone. sound like a impossible. What do you think?
Can someone help me with this, please.
Sorry for my bad english :/

Zidan made it clear,not everybody knows how to fix it. yeah,your phone is hard bricked.
You have 2 choices : send it to zidanro or to warranty.but i'm sure the warranty is void.

kimitza said:
Zidan made it clear,not everybody knows how to fix it. yeah,your phone is hard bricked.
You have 2 choices : send it to zidanro or to warranty.but i'm sure the warranty is void.
Click to expand...
Click to collapse
Quoting my private message to marko_s for everyone's benefit:
Take it to a cell/mobile service shop and JTAG the phone. It means that your phone will be open, some wires soldered on the chipset and the propper files re-flashed on the phone using a special software.

JTAG soldering
Hello,
thank You for respond. I send it to ONE service guy, friend of mine, and he connected it to riff box. Riff did not detect the phone.
I'm only asking if there is another schematics/a tip to connect it to riff in proper way to get it work.
Also, what is possibility that there is something wrong with riff and or way that connects to phone and can not detect it?
I think can phone be bricked so hard that riff can not help in this situation. ?
It is not burned in fire. PC detect it. So I think that there is something wrong with procedure he used to connect it and "flash" NAND chip.
Let me know if you have any suggestions. Phone is out of warranty, it's opened and soldered.
Thank you guys!

Hi, youre a lucky boy
Haha, you can install a mako rom, without brick, it will boot!
belive me!
(issues are no radio (2g, 3g etc..) , invent volume button, camera (not testet
i think combination e975 kernel and mako patch was bad idea

Nice joke
Hehehe, nice joke.
I must fix it or throw it in the trash. I do not have to buy Monalisa, I can hang it on the wall instead.
Can you tell me where JTAG pins are located? Under the board or on the top? I'm not asking for schematic.
I removed the cover and battery connector. I can not see any soldering pins and solder traces. I did not remove the board.
Help is really needed and appreciated
Thanks!

Wow.so you really wanna make a decorative object).look on youtube,there is a guy jtaging an e970. As zidan said,on e975 the jtag pins are located on the oposite side.
Sent from Asylum via LG E975/smart phones,dumb people.

LG optimus G e975
Hey guys i was wondering does the Jig method work? ive been trying to use it but so far no luck, and also i think my battery is completely dead its been sitting for 2 weeks while waiting to get money to repair the thing.I am in ro as well but in TM and ive checked every were non of the shops around here have any equipment to fix a hard bricked phone. got any advice? if i send it out to Bucharest how much would it cost me to get it un bricked.

Unbricked using JTAG
DanROBO said:
Hey guys i was wondering does the Jig method work? ive been trying to use it but so far no luck, and also i think my battery is completely dead its been sitting for 2 weeks while waiting to get money to repair the thing.I am in ro as well but in TM and ive checked every were non of the shops around here have any equipment to fix a hard bricked phone. got any advice? if i send it out to Bucharest how much would it cost me to get it un bricked.
Click to expand...
Click to collapse
I sent my to one service technician and he repaired my phone using RIFF. He had to remove JTAG connector. It is well done. I can not notice that it was there at all . I pay 25 EU for repair. It's not big money for that kind of repair.
What I will do, when I find a time to do so,. I will backup my phone using QPST and post files here on forum.
I have to put my phone in some kind of recovery mode and so on. I have no time for that, at the moment. I think it should work/help to repair your device(s).
Regards!

u sayed battery is dead?! try to open the phone and disconnect the battery (2 screws) and connect agayn and try.... for me it worked after my phone got very hot.. (nothing helped...)

marko_s said:
I sent my to one service technician and he repaired my phone using RIFF. He had to remove JTAG connector. It is well done. I can not notice that it was there at all . I pay 25 EU for repair. It's not big money for that kind of repair.
What I will do, when I find a time to do so,. I will backup my phone using QPST and post files here on forum.
I have to put my phone in some kind of recovery mode and so on. I have no time for that, at the moment. I think it should work/help to repair your device(s).
Regards!
Click to expand...
Click to collapse
Can i have te information for the technician you used? And was it in romania?
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
---------- Post added at 04:54 PM ---------- Previous post was at 04:48 PM ----------
2nd Sky said:
u sayed battery is dead?! try to open the phone and disconnect the battery (2 screws) and connect agayn and try.... for me it worked after my phone got very hot.. (nothing helped...)
Click to expand...
Click to collapse
I tried that no luck :'(

DanROBO said:
Can i have te information for the technician you used? And was it in romania?
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
---------- Post added at 04:54 PM ---------- Previous post was at 04:48 PM ----------
I tried that no luck :'(
Click to expand...
Click to collapse
Technician is from Bosnia And Herzegovina, city Zenica. He is precise in his work, as I saw.
I'm electronic engineer, but he is more than that . Last option would be to send your phone to him to repair it. :/
Contact me over pm for details. I could manage that for you.

Maybe i can help you
goodmamba said:
Yesterday I manage to hard-brick my Optimus G (intl) E975. :crying:
The process was quite simple, root, unlock bootloader, flash CyanogenMod, flash custom kernel F93, install FauxClock (paid version on Google Play). In this app (FauxClock), in the screen gamma settings you have an option to download a kernel enhancer. I downloaded the kernel enhancer provided in the app and its name was something like "all_kernels_enhancements_mako.zip". After download, I booted in recovery and flashed that "all kernels enhancement" .... and hard bricked it was!
The phone now won't start and all it does is to blink an Red Led (of death). I can't go intro recovery with any button combination. Only the red led. I hopped that it lacks battery juice and I put it overnight for charging but no change.
It looks like the zip was meant for the Mako (Nexus 4) kernels, not for L975
I searched on the web how to re-write phone's boot images and I found that there is a JTAG method for that using a device called RIFF. It implies that you open your phone and connect some plugs and re-write the nand flash. I searched some more and I found a guy in my town that does this kind of things. I met that guy and, for now, it seems that the re-write process is available only for the e970, e971, e973 variants of the phone, but he will try it on e975 anyways.
Right now I'm waiting some news for this guy. Keep my fingers crossed.
Update 1:
That guy with the JTAG has a hard time making my phone to boot.
Meanwhile I contacted LG service and they told me that they can try to fix it but there is a chance that the mainboard has to be replaced(?) as the phone is not recognized by the computer. They also told me that hard-bricking can appear even when flashing official firmwares.
As I am in a big hurry with this repairing stuff I don't know what to do.
Update 2:
In the end, after 8 hours of hard working, that guy made the best finding the right file to flash with some international help, made the right JTAG shouldering and finally, IT'S ALIVE!
My dear phone is now up and running. I just rooted it, unlocked it and flashed CM 10.1 again with the F93 kernel. Fortunately I made a backup 5 days ago so I lost almost nothing.
It was a good lesson and a first in Romania
Click to expand...
Click to collapse
Today i also managed to hard brick my phone. There was not a single notification that my phone is alive. I too found that QHSUSB at device manager.
But try one thing - 1) Plug it to wall charger for near about 15 mins. 2) Then Press Both vol buttons And then the power button too
( I tried Vol+ then Vol- and lastly power button ) Hold them all.
3) and when it shows charging screen keep pressing vol up button 1 time / sec.
You may not get succed for the very first time.
Try at least 4-5 Times.
Hit thanks If it Works :laugh: :good:

marko_s said:
Technician is from Bosnia And Herzegovina, city Zenica. He is precise in his work, as I saw.
I'm electronic engineer, but he is more than that . Last option would be to send your phone to him to repair it. :/
Contact me over pm for details. I could manage that for you.
Click to expand...
Click to collapse
Saw posts something like that in other forums. Some never saw their phones back. Hope this is not the case here and there is no attention to do so

I bricked my phone too, and jtag helped

Xperia S LCD bricked, phone death

Greats, I have a friend that broken is Xperia S LCD, it's all broken, the only thing that works is the red led when connected to the charger, is there any way to recover the photos in the internal memory? He does not have backups. I've tried to connect it to pc but no luck, even triend to connect with flasmode and other keys combination but I think it is realy death.:angel:

lfernandeshack said:
Greats, I have a friend that broken is Xperia S LCD, it's all broken, the only thing that works is the red led when connected to the charger, is there any way to recover the photos in the internal memory? He does not have backups. I've tried to connect it to pc but no luck, even triend to connect with flasmode and other keys combination but I think it is realy death.:angel:
Click to expand...
Click to collapse
This is a hardware issue, so it might just be possible, but only in a specialized service.

skywalkerdroid said:
This is a hardware issue, so it might just be possible, but only in a specialized service.
Click to expand...
Click to collapse
Thanks, i will tel my friend if he watsto send it to a repair service but probably it will be too expensive. Thats the price for having a phone without sdcard and for not do backup's.

lfernandeshack said:
Thanks, i will tel my friend if he watsto send it to a repair service but probably it will be too expensive. Thats the price for having a phone without sdcard and for not do backup's.
Click to expand...
Click to collapse
Actually, not doing a backup is worst

[Q] xperia m total dead

please help,
my phone suddenly dead after i went for pee (but i did't grab it when i take pee)
now, my phone can't start, can't charge, can't connected to pc,
i tried to solve it by pc companion, SUS, and flashtool,
but there is no sign that my phone detected by those tools,
and there is no led indication when i connected to pc,
what i suppose to do?

benn_seiei said:
please help,
my phone suddenly dead after i went for pee (but i did't grab it when i take pee)
now, my phone can't start, can't charge, can't connected to pc,
i tried to solve it by pc companion, SUS, and flashtool,
but there is no sign that my phone detected by those tools,
and there is no led indication when i connected to pc,
what i suppose to do?
Click to expand...
Click to collapse
If your phone isn't even going into flash mode than better try pulling out and reinserting the battery or try another one, and if that not works than take it to service center, no matter if you have rooted it they won't notice unless you have unlocked bootloader.
But mostly I think it's a battery problem so try another one from your friends or anyone. Good luck.
Hit thanks if I helped
Sent from my C2004 using Tapatalk

Wow, this is strange. As the comment above mine said, i also think it is a battery problem
Sent from my C2004 using XDA Free mobile app

i've tried to pull-insert battery, but nothing happen
then i tested battery with a led, and it's lighting
so i think it's not battery problem
do you think it's hardware problem guys?
thanks for your replies

I've seen this problem before with a work colleague, he got a c1905 for his daughter and within 2 weeks it did the same just turned off and wouldn't turn back on or do anything so he got a new one thru warranty pretty sure its a hardware problem on the board
Sent from my C1905 using XDA Premium 4 mobile app

unlucky me
my waranty is void, because white-mark on my phone turn into red
maybe i must look for new phone
thanks for your info

benn_seiei said:
unlucky me
my waranty is void, because white-mark on my phone turn into red
maybe i must look for new phone
thanks for your info
Click to expand...
Click to collapse
Well that's just unfortunate. Good luck on the new phone
Sent from my C2004 using XDA Free mobile app

Try going to pee again.
May be phone will start till you return. [emoji13]

StraightEdgeKid said:
Try going to pee again.
May be phone will start till you return. [emoji13]
Click to expand...
Click to collapse
that's awesome option

benn_seiei said:
that's awesome option
Click to expand...
Click to collapse
Can you give me complete info of your device (like model no. , rooted..etc..)I think i can fix it for you

my device just standart firmware from sony
i haven't rooted my device
but i have upgraded os by pc companion, so now it's load 4.3 from sony
everything just look fine until about 1 week later from the day of upgrade
now, it's lying dead on my desk
i've tried several method that i mention before (pc companion, sus, flashtool), but that's not working
thank for your kindness and attention
sorry if my english is not good

sorry i almost forgot
model no. C1905
os 4.3
firmware 15.4.A.0.23
thank you

problem solved
it's hardware problem
i know it from my friend
and my device got replacement some part
now, it's working again
:fingers-crossed:

how did you revive your phone plz?
benn_seiei said:
problem solved
it's hardware problem
i know it from my friend
and my device got replacement some part
now, it's working again
:fingers-crossed:
Click to expand...
Click to collapse
how did you revive your phone plz?
can you tell me about the way you did it, because I have a dead sony m dual after swapping ram. and it doesnot work and pc cannot detect it..... so please give me a help

My xperia m phone is dead I can't unlock my bootloader. I used PC companion but it won't help me!. I went to service centre they told me to change board but the board is good!. What should I do please help me!

[Q] how the hell did the local shop is repairing my LG OG(hard bricked) without JTAG?

By mistake i flashed nexus 4 kernel to my og and hard bricked my phone. I went to local shop repairer and they opened the back of the phone and connect many wires to the board and connect it to pc.They did something in their pc(something in cmd, don't know exactly) and they said that software installation process went till 71% and the phone switched off because of low battery.Is this really possible without JTAG? or they telling lies?

That is in fact JTAG Riff. They open the phone and connect some wires to the back of the phone and transfer the needed files to bring back the phone to life.

shirish893 said:
By mistake i flashed nexus 4 kernel to my og and hard bricked my phone. I went to local shop repairer and they opened the back of the phone and connect many wires to the board and connect it to pc.They did something in their pc(something in cmd, don't know exactly) and they said that software installation process went till 71% and the phone switched off because of low battery.Is this really possible without JTAG? or they telling lies?
Click to expand...
Click to collapse
What do you think JTAGing is?

ITzRicardo94 said:
That is in fact JTAG Riff. They open the phone and connect some wires to the back of the phone and transfer the needed files to bring back the phone to life.
Click to expand...
Click to collapse
so u think that is JTAG?

Duo8 said:
What do you think JTAGing is?
Click to expand...
Click to collapse
i dunno xD
i asked them whether they have JTAG or not. They replied they dont have :v

shirish893 said:
i dunno xD
i asked them whether they have JTAG or not. They replied they dont have :v
Click to expand...
Click to collapse
That is jtag... Probably thy don't knw the name for this procedure...
Sent from my LG-E975 powering Stock 4.4.2 & SOLID Kernel

This is how JTAg-ing is done on Optimus G.
http://www.youtube.com/watch?v=5NRXhJxbtYY

[Q] Xperia ZL always reset

Can anyone help me????? i have rooted my phone a long time, but, last night, jusst installed PurePerformances™X Golden Edition
now my phone always reset and stop at SONY logo, sometime at animation. I flash it by flashtool, now, i just can start my phone with charge on, my battery is fullfill but it still error at SONY logo unless charge on. ANY EXPERTS CAN HELP ME ???? :'(

Jinnee said:
Can anyone help me????? i have rooted my phone a long time, but, last night, jusst installed PurePerformances™X Golden Edition
now my phone always reset and stop at SONY logo, sometime at animation. I flash it by flashtool, now, i just can start my phone with charge on, my battery is fullfill but it still error at SONY logo unless charge on. ANY EXPERTS CAN HELP ME ???? :'(
Click to expand...
Click to collapse
That´s a known issue of Xperia ZL.
See here
http://forum.xda-developers.com/showthread.php?t=2541503

So, can you boot your phone up, and then it shuts off when you unplug it?
or are the symptom's different?

scifan said:
So, can you boot your phone up, and then it shuts off when you unplug it?
or are the symptom's different?
Click to expand...
Click to collapse
Right like you said, i can turn on if charge battery, when i unplug it, it shuts down :crying::crying::crying::crying::crying::crying:

soprano77 said:
That´s a known issue of Xperia ZL.
See here
http://forum.xda-developers.com/showthread.php?t=2541503
Click to expand...
Click to collapse
tks guys, now i see the dark future with my phone :'(((((((, So, The process of ROOT,CWM and other activities are not the main reason to break my phone ?????? Just simple are BATTERY ???:crying::crying:

Jinnee said:
Right like you said, i can turn on if charge battery, when i unplug it, it shuts down :crying::crying::crying::crying::crying::crying:
Click to expand...
Click to collapse
That's the battery issue...
How old is your phone (should it be under hardware warranty?), did you buy it new, did you unlock your boot partition (and if so, did you save it?)

scifan said:
That's the battery issue...
How old is your phone (should it be under hardware warranty?), did you buy it new, did you unlock your boot partition (and if so, did you save it?)
Click to expand...
Click to collapse
hello man, i have just bought it for 1 year, today i bring it in my store where i buy it. The phone repair personnel change a new battery and my phone still not working. )))))) funny mobile

Jinnee said:
hello man, i have just bought it for 1 year, today i bring it in my store where i buy it. The phone repair personnel change a new battery and my phone still not working. )))))) funny mobile
Click to expand...
Click to collapse
Wow... I'm surprised... that's generally the fix for that.

scifan said:
Wow... I'm surprised... that's generally the fix for that.
Click to expand...
Click to collapse
Now the store keeps my phone to test hardware components and machine )) I hope it will soon back to normal, Fortunately, I didn't unlock bootloader

When I took mine with same issue to my provider, it was sent directly to a Sony repair center where they replace both camera and battery!
(I swear, they gave me a diagnostic document)
Since then, my phone has been working very well

soprano77 said:
When I took mine with same issue to my provider, it was sent directly to a Sony repair center where they replace both camera and battery!
(I swear, they gave me a diagnostic document)
Since then, my phone has been working very well
Click to expand...
Click to collapse
last night, the store confirms for me my phone was broken with battery ))) so just wait, tks to share )))