Related
Hi all,
I was flashing between Jf6 and JH7 today, wanted to see if flashing JH7 via different methods would give me a 3 button fix. (If it did fix it then flashing via Kies mini didn't do the job)
Ironically it backfired when Odin froze and I flipped out the battery
(Hey, I've been at the dl screen before when it was doing nothing and it survived!)
I plug the USB in, I get the exclamation screen
Do it with volume keys pressed, still get it
Hold down the volume + power and the screen goes blinking between exclamation and blank. I've tried releasing power keys at each point in those screens
I even took a video incase I'm not doing it right. Odin is running in the background. No USB plug-in 'pings' from Windows, as you can hear.
Anything I can do?
btw my bat build date is 8/13.. that bad week
I'm in Australia (bought phone off ebay) so sending it back to the States will be a bit of trouble.. I'm hoping I can work something out with the ebay seller otherwise I'll buy another cappy and hope someone finds the jtag points I guess.
same here. no button combo method that previous worked is working now. :/
OP, did you see this thread: http://forum.xda-developers.com/showthread.php?t=775911
not working for me, but maybe it'll help you ... ?
Tremere said:
Hi all,
I was flashing between Jf6 and JH7 today, wanted to see if flashing JH7 via different methods would give me a 3 button fix. (If it did fix it then flashing via Kies mini didn't do the job)
Ironically it backfired when Odin froze and I flipped out the battery
(Hey, I've been at the dl screen before when it was doing nothing and it survived!)
I plug the USB in, I get the exclamation screen
Do it with volume keys pressed, still get it
Hold down the volume + power and the screen goes blinking between exclamation and blank. I've tried releasing power keys at each point in those screens
I even took a video incase I'm not doing it right. Odin is running in the background. No USB plug-in 'pings' from Windows, as you can hear.
Anything I can do?
btw my bat build date is 8/13.. that bad week
I'm in Australia (bought phone off ebay) so sending it back to the States will be a bit of trouble.. I'm hoping I can work something out with the ebay seller otherwise I'll buy another cappy and hope someone finds the jtag points I guess.
Click to expand...
Click to collapse
You may also want to try removing and then reinstalling the Samsung USB drivers on your PC.
I've verified there is simply no USB device being registered no matter what OS, the phone is just sucking power.
@The_Bishop: Did see that, exactly the same as yours, plug usb in, get that screen
Anyone want to be awesome and send my Capppy back to Samsung on my behalf?
best method that never dies when i was in your situation......
unplug usb, turn phone off, then put battery in, turn odin on, now hold volume buttons ONLY then insert usb in phone, you will see download mode with odin identifying the port;
hope it worked ?!?!?!?
Believe me I have tried everything. There is simply was and still is no way to enter recovery or download mode on this phone. Its hardware locked!
a little off topic, but how do i find my phones "bat build date" ?
I had the exact same problem. If you do a battery pull.. hold down both volume buttons and plug the usb cable into the phone while it's hooked to PC then it bumps you into Download mode. I did the exact same thing you did and am running froyo at the moment.
Oh.. no power button.. just both volume buttons.
YoungGun821 said:
a little off topic, but how do i find my phones "bat build date" ?
Click to expand...
Click to collapse
Is on the underside of the battery, one facing into the slot.
i.e 2010.08.13
terrigan said:
I had the exact same problem. If you do a battery pull.. hold down both volume buttons and plug the usb cable into the phone while it's hooked to PC then it bumps you into Download mode. I did the exact same thing you did and am running froyo at the moment.
Oh.. no power button.. just both volume buttons.
Click to expand...
Click to collapse
Done that. Exactly what happens in video. Both volume buttons down, plug in usb.. no response, just brick screen.
I had the same problem.. the phone didn't register USB.. have you rebooted the computer? I believe i did that at one point.
terrigan said:
I had the same problem.. the phone didn't register USB.. have you rebooted the computer? I believe i did that at one point.
Click to expand...
Click to collapse
I did try once or twice. From another thread it was also said to disable driver verification on windows startup for x64 machines. which I also did.
Basically I want to hear from someone who:
a) has a captivate that could never enter dl/rescue via buttons, only adb
b) captivate didn't trigger a plug in 'ping' from Windows until they ??
FYI this is a Macbook Pro, and I booted into Win7 x64 Pro for flashing.
Hi I have the same problem..
What I did was this rooted with one click.. loaded Cognition 2.1.6 all was good..I saw the froyo so I thought lets try it. so opened up ODIN put it in recovery mode. with ADB could never get it in the button way.. it started to load and it froze. I didn't disable voodoo and IS THAT WHY I AM STUCK? I have tried every combo changed drivers computer will not see the phone.. is it a AT&T Phone
IS there anyway to fix it?? or can someone make a program to fix this? I would make a big donation if they did!!!
Thanks Forum!!
Yeah I had it in adb mode to enter download mode, maybe that is why it won't start back up.
I've now given the phone to a local mobile repair business, if riffbox or someone comes out with a Captivate rescue soon its probably as a end result of me
I sent mine back to Samsung as well. BTW, I have a battery from 2010.08.12 so I might be in the same boat. Wish I'd have used one of my OEMs to see if that made any difference, but I did not. :/
I have the same issue.
Rooted my phone through adb, which was fine. Couldn't get into recovery/download modes with hardware before then.
Now my phone is bricked, and not detected or even charging via USB.
wtf
If the repair shop cant fix it try this:
1.) Remove Battery, SIM Card and External SD
OR
2.) Press and HOLD VOL UP AND DOWN with USB inserted and THEN slap in the battery.
This worked for me, for some reason inserting the battery last did the trick.
Let me know if anyone finds a solution to this I have tried it all and my computer will not detect my phone. Has Samsung blocked this in there firmware?
Did you try what I posted above?
yep nothing if I could get it to detect in command prompt I could force it but it won't... the button thing didn't even work when the phone worked!
So ....
Hi,
Searched the forum and didn't really find anything like the problem I'm experiencing (even though I might be very wrong on this ).
My device is S-OFF, has clockwork recovery etc. And I was using a custom ICS build (namely this: http://forum.xda-developers.com/showthread.php?t=1424260 )
And earlier today it froze (not super uncommon ). But I had to remove the battery because it was non responsive.
But anyway. Now it's dead!
Nothing happens when I press the power button.
Tried it by removing the battery a couple of times, pushing the button again.
No sound, no buzz, just pitch black screen.
Tried booting into the bootloader with "Vol Down + Power button". Same result here. Just black screen.
Tried connecting it to the PC to boot into bootloader from there. But the PC doesnt even recognize that I have plugged something in
(using dmesg says nothing about a device being connected.. which usually is not so good )
The only sign of "life" I get is when I connect the phone to the charger (or usb cable to the computer) without ever tried booting it with "power button" or "power button + vol down" is that the LED lights up orange.
If I have tried to turn it on it will not light up orange.
I have tried to have it for a few hours (with the light orange) on the charger, then booting it.. But with no luck
I kinda feels like my device has died! I dont really feel it has been bricked? Maybe hardware malfunction? which sucks since my warranty will not be valid because of S-OFF
Anyone have any ideas or tips on what I could possibly try with?
If you were overclocking, the cpu may have overshot. Probably 'hardwear'...
You might take it to a repair facility to diagnose if they can help.
If computer doesn't read it and no boot, nothing you can "do" yourself...
Sounds like brick :what:
sent from xda premium on an Incredible S
Check to see if it responds to any ADB/fastboot commands
cant run any adb commands
Since it's not recognized at all by my computer I cant do any adb commands.
Not list the device, not do fastboot etc.
I still have warranty on the phone, will the repair shop be able to see that I have taken it S-OFF? Or will they most likely just replace the motherboard?
The company I have to leave it to is notorious for being the biggest assholes in the history of this earth
and yeah... I had it overclocked! but only by one step (from oc virtious quattro) or perhaps 2 steps max.
If you cannot see the device on the PC at all, the service centre won't know that you are s-off. If you have a windows install, check in the device manager to see if the phone is detected at all.
Yeah htc has so many repairs they don't have time to mess around dude. They'll try to turn it on, and it won't, so they'll try a fully charged battery and it won't turn on again, they'll throw from anew motherboard in after that and if that doesn't work they'll give you a brand new phone. I'd say you have a 5% chance of them finding out your s-off.
Sent from my anus using xda crap
I was just playing around trying to move apps onto my new micro sd card. I rebooted several times. But suddenly when I rebooted one more time, the screen turned black. It was supposed to reboot into recovery (CWM). So I tried to turn it on again. Nothing happened. I also tried to press power button + vol up. Nothing happened. No light when charging either. I really really really need some help
ende124 said:
I was just playing around trying to move apps onto my new micro sd card. I rebooted several times. But suddenly when I rebooted one more time, the screen turned black. It was supposed to reboot into recovery (CWM). So I tried to turn it on again. Nothing happened. I also tried to press power button + vol up. Nothing happened. No light when charging either. I really really really need some help
Click to expand...
Click to collapse
Does your phone vibrate when you press power + vol up? Can you get it into flashmode?
If your pc recognizes the phone as qhsusb_dload or something like qloader it's hard bricked and there's nothing left you can do..
St.Jimmy90 said:
Does your phone vibrate when you press power + vol up? Can you get it into flashmode?
If your pc recognizes the phone as qhsusb_dload or something like qloader it's hard bricked and there's nothing left you can do..
Click to expand...
Click to collapse
Nothing happens, its not vibrating, its not charging, and nothing happens when I plug it into my computer. I am a little bit experienced, so I know what to do if I atleast could get it into flashmode
ende124 said:
Nothing happens, its not vibrating, its not charging, and nothing happens when I plug it into my computer. I am a little bit experienced, so I know what to do if I atleast could get it into flashmode
Click to expand...
Click to collapse
Does the led flash red if you hold down power and vol up while you plug it into your pc?
St.Jimmy90 said:
Does the led flash red if you hold down power and vol up while you plug it into your pc?
Click to expand...
Click to collapse
No flashing LED, no vibrating, nothing.
I'm afraid to say this but it seems your phone is hard bricked... Try to do a rubber band across it so that the power button and vol up buttons get pressed all the time and plug it into your wallcharger. If that doesn't help bring it to your local sony service centre and let them repair it although they will very likely charge of a service fee.
Good luck mate!
Gesendet von meinem C6603 mit Tapatalk
St.Jimmy90 said:
I'm afraid to say this but it seems your phone is hard bricked... Try to do a rubber band across it so that the power button and vol up buttons get pressed all the time and plug it into your wallcharger. If that doesn't help bring it to your local sony service centre and let them repair it although they will very likely charge of a service fee.
Good luck mate!
Gesendet von meinem C6603 mit Tapatalk
Click to expand...
Click to collapse
Thank you, I will try that. It is really weird, the last thing I did was pressing the restart in recovery button.
I bricked my phone while trying to unlock bootloader (didnt wait for the command prompt to complete the process) and later my pc was recognizing it as qhsusb_dload. But my volume buttons were working and I used the Sony update service to restore it.
waji97 said:
I bricked my phone while trying to unlock bootloader (didnt wait for the command prompt to complete the process) and later my pc was recognizing it as qhsusb_dload. But my volume buttons were working and I used the Sony update service to restore it.
Click to expand...
Click to collapse
I've used that tool several times when I softbricked my phone or didnt have a backup xD
ende124 said:
I've used that tool several times when I softbricked my phone or didnt have a backup xD
Click to expand...
Click to collapse
You should leave it for charging for a while and then check, maybe the battery is dead.
waji97 said:
You should leave it for charging for a while and then check, maybe the battery is dead.
Click to expand...
Click to collapse
Its weird how it ws completely fully charged wen it passed away...
ende124 said:
Its weird how it ws completely fully charged wen it passed away...
Click to expand...
Click to collapse
So does it work now?
ende124 said:
Its weird how it ws completely fully charged wen it passed away...
Click to expand...
Click to collapse
It is very possible, frequent restarts eat away alot of battery, and you never know maybe it was on while you saw a black screen thinking it was off.
waji97 said:
It is very possible, frequent restarts eat away alot of battery, and you never know maybe it was on while you saw a black screen thinking it was off.
Click to expand...
Click to collapse
I'm just saying, I've put my phone into the charger trying to charge it and turn it on. The LED won't turn on when I put my phone into the charger. I also tried the hard reboot keys power + vol up.
ende124 said:
I'm just saying, I've put my phone into the charger trying to charge it and turn it on. The LED won't turn on when I put my phone into the charger. I also tried the hard reboot keys power + vol up.
Click to expand...
Click to collapse
Then its probably very hard bricked. You should take it to Sony and let them figure it out.
ende124 said:
I'm just saying, I've put my phone into the charger trying to charge it and turn it on. The LED won't turn on when I put my phone into the charger. I also tried the hard reboot keys power + vol up.
Click to expand...
Click to collapse
Did you also try the rubber band method? Putting a rubber band across the phone so that power and vol up buttons are pressed while it is on the charger for several hours?
St.Jimmy90 said:
Did you also try the rubber band method? Putting a rubber band across the phone so that power and vol up buttons are pressed while it is on the charger for several hours?
Click to expand...
Click to collapse
If you see a flashing blue light, when it is not plugged in, it's because the bootload was entered improperly and is in safe mode. The only way you can fix it, is to do a system wipe via Sony Companion and reinstall stock ROM. It's an Xperias way of bootlooping into a safe mode when it's locked.
---------- Post added at 01:38 AM ---------- Previous post was at 01:33 AM ----------
waji97 said:
I bricked my phone while trying to unlock bootloader (didnt wait for the command prompt to complete the process) and later my pc was recognizing it as qhsusb_dload. But my volume buttons were working and I used the Sony update service to restore it.
Click to expand...
Click to collapse
Too bad Sony doesn't implement an ADB OTI. Otherwise you could flash ROMs even with factory lock and never brick it.
i am experiencing the same problem right now. hadn't touched the tablet in a couple weeks, i seem to remember turning it off because it was really low on battery and the charger wasn't near. now it is just a black rectangle.. LED never responds, charging doesn't do anything, doesn't show up on ADB or flashtool.
seems like it is some problem with the firmware or hardware since all the android devices i've owned have always charged (with the LED on) regardless of the condition of the software (hell my one x that busted open and the screen doesn't work still charges and hooks up to the computer)
i would love to get this fixed because sony tech support pretty much bent me over today.
axis888x said:
i am experiencing the same problem right now. hadn't touched the tablet in a couple weeks, i seem to remember turning it off because it was really low on battery and the charger wasn't near. now it is just a black rectangle.. LED never responds, charging doesn't do anything, doesn't show up on ADB or flashtool.
seems like it is some problem with the firmware or hardware since all the android devices i've owned have always charged (with the LED on) regardless of the condition of the software (hell my one x that busted open and the screen doesn't work still charges and hooks up to the computer)
i would love to get this fixed because sony tech support pretty much bent me over today.
Click to expand...
Click to collapse
Did you try external battery terminal dismount?
what is "external battery terminal dismount"?
Hello everybody!
I'm new in this forum, I'm also new in Android "tuning", so I don't actually know, what to do in this situation. Ok, I've read other topics about this, but every other seems lighter than my problem.
Firstofall, I wanted to apologize for my english, but I hope, you could understand me. :fingers-crossed:
So, there is an Xperia T LT30p which has been owned by my girlfriend. She donated it to her mother and so on, so long story short, one day there appeared a key and exclamation mark in a yellow triangle (if I understood it right, I really don't know) and after that it was dead. I plugged it in wall charger - nothing, no vibration, no led, nothing, then waited for some time, nothing changed. Ok, removed the back cover, tested voltage on battery - 3,83V, not so dead, I guess... Then I started to read topics in here, sounds like a hard brick, but how to solve it..? I tried to power it up, nothing (as you expected), also tried every possible key combination (power + vol up, power + vol down, vol up/vol down + USB cable) - nothing at all, no vibration, no leds, nothing on the screen. Yesterday I downloaded PC companion, downloaded Flashtool, tried to connect it to PC, of course no drivers, but got the QHSUSB_DLOAD, so I guess, it's not that dead.
Oh yes, the only way how this phone is responding somehow is when I plug in the USB cable/wall charger with removed battery, then it does one red blink and that's all, nothing else. And that doesn't matter if there is any button pressed.
The main question is - what can I try to do in this situation? Is it fully dead?
I really hope for your answers and suggestions, otherwise, I don't really know what to do with that electronic mess on the table... :fingers-crossed:
Remove the battery and press and hold power and volume up buttons simultaneously. Then plug your phone to computer.
You'll be able to flash a kernel with Fastboot mode in Flashtool that way.
If you have the kernel the phone should boot past sony logo. You may then install whatever ftf you like via Flashtool.
Btw, I have read somewhere that the computer recognizing the phone as qhusb_dload is the result of a broken motherboard. Would make most sense anyway, as the phone was not rooted or anything.
I suggest trying above steps anyway.
Good luck!
The phone is not rooted or something, just a stock Xperia...
Just tried as you said, with removed battery pressed power + vol up simultaneously + USB - nothing, I got one red blink and nothing more, computer makes that ''no driver'' sound and that's all, flashtool doesn't find my device...
No wonder about defective motherboard, but the phone is bought in the summer 13', not so old for a phone... And what could had happened with this phone in just everyday use..?
Maybe overhearing or just bad luck with the motherboard.. Sometimes there is no explanation. :/
Is your phone still under warranty ?
Well, technically yes, but warranty card is hiding somewhere, and the phone is bought in an e-shop, i'm not sure if this shop won't send me a few doors further with my phone and I don't even know if this shop still exists..
Andrams said:
Well, technically yes, but warranty card is hiding somewhere, and the phone is bought in an e-shop, i'm not sure if this shop won't send me a few doors further with my phone and I don't even know if this shop still exists..
Click to expand...
Click to collapse
Hi, solved your problem with this method.?
xmontix said:
Hi, solved your problem with this method.?
Click to expand...
Click to collapse
Hi.
Not yet and I think I won't. I got an information about that sad day when this happened. Sony was upgrading an Android version but this process was interrupted somehow, so, I guess, it's quite dead...
HELP! My Xperia SP is dead after unlocking bootloader with official way!
It won't turn on even when I tried to boot it up by connecting via usb to laptop.
I tried to charge it, but it's useless
I also tried to force restart it from restart button but it doesn't wake up
HELPP! :crying:
#UPDATE: By some miracle, the phone boots itself up and get working again. All apps are gone (like factory reset). It shut down about 2 hours then suddenly it came back to life. Still don't get it why this can be happening though. But thank God!
reynaldi3 said:
HELP! My Xperia SP is dead after unlocking bootloader with official way!
It won't turn on even when I tried to boot it up by connecting via usb to laptop.
I tried to charge it, but it's useless
I also tried to force restart it from restart button but it doesn't wake up
HELPP! :crying:
Click to expand...
Click to collapse
Have you tried the OFF button on the back?
You should try to connect your phone to pc, press volume button and keep it pressed. Then without releasing the volume button, press the restart button on the back until you see the led (blue or green depending on the volume you pressed). This means you have at the same time : usb + volume + reset button on the back.
You should keep it pressed during 3 to 15 seconds. If this doesn't work, put your phone to charge (on wall charger and preferably with stock charger) during 1-2 hours and try again.
Try reflash a stock ftf
Please provide more information to the things you did. Did you use EMMA or FLASHTOOL?
TLDGames said:
Have you tried the OFF button on the back?
Click to expand...
Click to collapse
Yes, I tried but it still doesn't work, the phone heats up while there is no sign of life. But after 2 hours it turns back on! Weird
pec0ra said:
You should try to connect your phone to pc, press volume button and keep it pressed. Then without releasing the volume button, press the restart button on the back until you see the led (blue or green depending on the volume you pressed). This means you have at the same time : usb + volume + reset button on the back.
You should keep it pressed during 3 to 15 seconds. If this doesn't work, put your phone to charge (on wall charger and preferably with stock charger) during 1-2 hours and try again.
Click to expand...
Click to collapse
I did that multiple times but there was no sign of life. No led pulse, dead screen, but only warm phone. But it came back on after 2 hours
lucasgta95 said:
Try reflash a stock ftf
Click to expand...
Click to collapse
I can't since it won't connect to anything (wall charger, usb, etc). But thank God it has come to life !
Furrydaus said:
Please provide more information to the things you did. Did you use EMMA or FLASHTOOL?
Click to expand...
Click to collapse
I use cmd since flashtool won't recognize my phone even I have install the correct driver. I read all the instructions from Sony web about unlocking bootloader and I suffer this situation. But after 2 hours it turns back on...
reynaldi3 said:
I use cmd since flashtool won't recognize my phone even I have install the correct driver. I read all the instructions from Sony web about unlocking bootloader and I suffer this situation. But after 2 hours it turns back on...
Click to expand...
Click to collapse
You should have followed the unofficiall methods and not sony
reynaldi3 said:
I did that multiple times but there was no sign of life. No led pulse, dead screen, but only warm phone. But it came back on after 2 hours
Click to expand...
Click to collapse
I have the same problem now and you made my hopes up. I was on PAC rom, normally working, but when i picked up my phone, it wasn't responding, OFF button isn't doing anything and my PC even doesn't recognize the phone over USB. So i hope it will be working again later. :fingers-crossed:
Edit: 12 hours later and still no signs of life, so im' doiwnloading ftf and i'm going to try flashing it...
Make sure you have the driver installed for your phone.
1. Download, install and run the driver update utility. Here's the link where you can download it.
http://www.driverscape.com/download/xperia-sp
2. If it doesn't detect your phone, download flashtool from here:
http://www.flashtool.net/downloads.php
Make sure you have the latest ftf image in order to flash to your phone. You can download from here.
http://forum.xda-developers.com/showthread.php?t=2311964
3. Make sure your phone is off by force shut down (clicking the OFF hard key in the back)
4. Open flashtool. Press and hold the volume down key and then connect your phone to the computer by USB.
5. The notification bar will light green indicating that it is connected in flash mode.
You can then follow instructions on how to flash through Google search. If you are able to reach step 5 and don't know how to flash, let me know.
daubh said:
Make sure you have the driver installed for your phone.
1. Download, install and run the driver update utility. Here's the link where you can download it.
http://www.driverscape.com/download/xperia-sp
2. If it doesn't detect your phone, download flashtool from here:
http://www.flashtool.net/downloads.php
Make sure you have the latest ftf image in order to flash to your phone. You can download from here.
http://forum.xda-developers.com/showthread.php?t=2311964
3. Make sure your phone is off by force shut down (clicking the OFF hard key in the back)
4. Open flashtool. Press and hold the volume down key and then connect your phone to the computer by USB.
5. The notification bar will light green indicating that it is connected in flash mode.
You can then follow instructions on how to flash through Google search. If you are able to reach step 5 and don't know how to flash, let me know.
Click to expand...
Click to collapse
Thanks, i know how to flash ftf, but my phone shows no signs of life, when plugged to charger, the LED doesn't light up and i can't go to flash mode aswell. So now it seems that the only thing i can do is to take my phone to repair, as it seems there is some hardware problem...
Dead Xperia SP Also
I have same situation since 21st of December.. I left my Phone on. When I was going to bed. I woke Up and saw this fuzzy blank grey screen, then I pressed the reset button at the back of the phone thinking all will be fine, But since then I've been battling with it. First, No sign of life after plugging, then a day later after I left it connected to my PC, The LED LIGHT turned red, but dead screen. About 15MINS later it goes off, Then comes up again (LED LIGHT) I've tried connecting to PC, it recognises it for about 4seconds and it disconnects automatically, I've tried practically all the method I saw on here.. Rubber band trick,leaving it to charge all night connected to wall charger / PC..All proved abortive, I have been trying to get the MAGIC green LED LIGHT (FLASHMODE) but it never works.. I took it to a repair shop (NOT SONY) He said he only deals with HARDWARE that it wasn't hardware problem, and they then went ahead to flash it.. (I'm out of warranty) STILL NO LUCK.. I'll be glad if anyone can guide me through or come up with a Plausible SOLUTION, 'cause my BREAK has been horrible since my PHONE went M.I.A..... Thank you GUYS
So, finally I'm going to pick up my repaired SP :fingers-crossed:. They thought it was a problem caused by the reset button pushed too hard, but since they've informed me they've changed whole motherboard, the problem must have been somwhere else, maybe they'll tell me where.
(And it seems that despite the fact i've unlocked the bootloader and flashed ROM on it, they will accept it as a warranty repair, because i think they weren't able to get to know that )
My XSP must really hate me. After less than a week since i've picked it up from the repair, it's dead again (everything tried - reset button, leaving it to charge, usb) with no signs of life ... I guess there must be a much bigger problem than just motherboard That means another two weeks with my old slow LG OO. I'm gonna die without it, i've maintained almost a month without it back then, but i had a tablet borrowed for a review. Now it's worse...
Maybe they should give me another XSP instead of trying to repair this one again...
have you considered about the battery?
the battery might be dead for all we know
That may be the problem, but i must also keep in mind that it had its motherboard changed a week ago. Anyway, i took it to the service again, they also said that charger may be causing it, but battery seems more logical to me as there were no problems with charging.
So i have to wait another two long weeks and then i'll know what was it...