[Q] Samsung S2 stuck in boot loop, cannot access Recovery Mode. - Galaxy S II Q&A, Help & Troubleshooting

Hey Guys, ive scoured google for 2 days now trying to find a way to fix my phone.
two days ago i was doing some work and i left my phone on the table, and later i found out that the battery was low and it had shut off. But when i looked at it, it was just flashing the "samsung galaxy s2 gt-i9100" text logo. (and not the animation circle logo.)
I tried turning it off, didnt work so i thought it had frozen which happens, so i took out the battery and put it back in again.
Then i tried to plug it into my recharger, and it was showing a grey battery icon and was frozen on that screen always, the screen doesnt turn off, the battery icon isn't showing that its charging. doesnt change, just shows the same empty battery grey icon with the refresh circle-arrow in the middle.
I tried taking the battery out leaving it out for 5 minutes, draining the battery from the phone by holding the power button for 10 seconds, then trying to charge the phone. Same issue, only showing the grey battery icon when trying to charge and it never changes or goes away.
SO i tried to boot up the phone, but it wont go past the samsung text logo.
I tried entering recovery, but it just freezes on the samsung text logo.
I can enter Odin download mode, and ive tried installing several different both stock, original and CMW roms, and nothing changes. (except if i use gingerbread, then the grey battery icon just keeps flashing off and on in 5 second intervals when plugged into the charger.)
Ive tried taking the battery out for 8 hours and try booting it, no change.
Ive tried changing the battery, no change (think it has low bat as well maybe).
Ive tried leaving it plugged in overnight, but that only drained whatever power i had left over in one of the batteries.
Ive tried some of the siyah and doriman kernels, and they add a loading bar which gets full on the samsung text screen,
but then freezes after that.
Im losing my mind here, ive tried almost everything i can think of. And would really appreciate any help on this.
UPDATE
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Ok so to keep this post updated for people experiencing the same issues.
IT seems there is a hardware failure in progress.
BUT i managed to get a temporary fix, it seems that by having the ear plugs connected into the earphone jack in the phone, the phone becomes somewhat usable. I was able to get into recovery, and able to flash a new stock, and its up and running, but as i said this is only a temporary solution as the real issue is that the phone is not conducting the electricity in a proper way that allowed me to recharge my batteries until i had added the earphones...
The phone becomes unusable for me when i remove the earphones again, as i believe its failing to conduct the electricity from the battery properly through the motherboard without something connected into the earphone jack..
SO for people having issues with their phones, it might be a possible way to get your phone temporarily operational again.
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Search for Hopper8's 'Odin troubleshooting' thread, download the 3 part stock firmware linked in the thread, flash it with Odin (only if you absolutely have an I9100/I9100T though).
Edit - Doesn't sound promising though, cross your fingers doing that works.

yeah i tried hoppers guide, didnt help me.
Still stuck on the samsung screen.
Whats wierd is, if ive got the phone on charging, it wont boot to the samsung screen even, it just turns itself off
and returns to the grey battery icon again.

Hang on....Did you try flashing the 3 part firmware like I mentioned ? If you haven't, do it. If you have, it's a service centre/local mobile repair shop job.

MistahBungle said:
Hang on....Did you try flashing the 3 part firmware like I mentioned ? If you haven't, do it. If you have, it's a service centre/local mobile repair shop job.
Click to expand...
Click to collapse
Yeah, tried 3 part, even another packages with pit files bootloader and repartitioning from another guide.
still no change, still freezes at samsung text screen.
I dont want to take it to a service center, as there is none around here as far as i know. Norway.
If i can just get it into recovery mode i can prob fix it, but i cant fracking enter recovery. Its driving me insane.

Given what you've tried, no chance of fixing it yourself by the usual methods.
Either take it to a local mobile repair shop & ask them to source a 2nd hand motherboard for you & put it in, or you source one (from a 'donor' phone; a phone with a broken screen that is otherwise OK for example, search online) & either replace it yourself or pay the local mobile repair shop to do it if you're not confident enough.

have you ever flashed a rom on that before..... or is this a stock ROM phone we are talking about???
if it was a stock ROM phone....then did it receive updates over carrier network and started to install itself???
if yes then you should have not stopped it...... i have some problem with phone 3 days ago.... i downloaded latest XWMS1 released for nordic region....... phone is fixed and i am back to neatrom 5.3.1
i suggest you download XWMS1 ...and try flashing it via Odin..... might start......
keep fingers crossed

Roshan707 said:
have you ever flashed a rom on that before..... or is this a stock ROM phone we are talking about???
if it was a stock ROM phone....then did it receive updates over carrier network and started to install itself???
if yes then you should have not stopped it...... i have some problem with phone 3 days ago.... i downloaded latest XWMS1 released for nordic region....... phone is fixed and i am back to neatrom 5.3.1
i suggest you download XWMS1 ...and try flashing it via Odin..... might start......
keep fingers crossed
Click to expand...
Click to collapse
It wasn't any update or anything, it was related to the battery i think as the batt was low.
And instead of recharging the battery, it went into bootloop and started draining the battery more when it was plugged into the charger.
ive downloaded xwms1, still stuck in bootloop.
Ive even opened it up to see if it was a hardware issue, i see no flaws, all buttons work and nothing is stuck.
the phone just keeps going to the samsung logo, and wont go into recovery mode.
It can easily go into download mode, but recovery mode is just not happening.
at this point i just ordered the Xperia Z1 instead, but i still want to fix this phone and give it to my dad or something.

desidarko said:
Hey Guys, ive scoured google for 2 days now trying to find a way to fix my phone.
two days ago i was doing some work and i left my phone on the table, and later i found out that the battery was low and it had shut off. But when i looked at it, it was just flashing the "samsung galaxy s2 gt-i9100" text logo. (and not the animation circle logo.)
I tried turning it off, didnt work so i thought it had frozen which happens, so i took out the battery and put it back in again.
Then i tried to plug it into my recharger, and it was showing a grey battery icon and was frozen on that screen always, the screen doesnt turn off, the battery icon isn't showing that its charging. doesnt change, just shows the same empty battery grey icon with the refresh circle-arrow in the middle.
I tried taking the battery out leaving it out for 5 minutes, draining the battery from the phone by holding the power button for 10 seconds, then trying to charge the phone. Same issue, only showing the grey battery icon when trying to charge and it never changes or goes away.
SO i tried to boot up the phone, but it wont go past the samsung text logo.
I tried entering recovery, but it just freezes on the samsung text logo.
I can enter Odin download mode, and ive tried installing several different both stock, original and CMW roms, and nothing changes. (except if i use gingerbread, then the grey battery icon just keeps flashing off and on in 5 second intervals when plugged into the charger.)
Ive tried taking the battery out for 8 hours and try booting it, no change.
Ive tried changing the battery, no change (think it has low bat as well maybe).
Ive tried leaving it plugged in overnight, but that only drained whatever power i had left over in one of the batteries.
Ive tried some of the siyah and doriman kernels, and they add a loading bar which gets full on the samsung text screen,
but then freezes after that.
Im losing my mind here, ive tried almost everything i can think of. And would really appreciate any help on this.
Click to expand...
Click to collapse
errrrm - just a thought (and it's a real long shot) I had some strange battery drain (bootloop) issues with a brand new i9100 and it turned out that the micro sd card I was using was corrupt, took it out and it worked. Might be worth a try but like I said its a long shot. If that does not work I agree with mistahbungle and looks like you wil need to replace the mb.

Jimsilver73 said:
errrrm - just a thought (and it's a real long shot) I had some strange battery drain (bootloop) issues with a brand new i9100 and it turned out that the micro sd card I was using was corrupt, took it out and it worked. Might be worth a try but like I said its a long shot. If that does not work I agree with mistahbungle and looks like you wil need to replace the mb.
Click to expand...
Click to collapse
Yeah ive already taken out the micro sd card and sim card, didnt change anything.
Just so weird the phone is less than 2 years old. Sucks that its already llike this.

desidarko said:
Yeah ive already taken out the micro sd card and sim card, didnt change anything.
Just so weird the phone is less than 2 years old. Sucks that its already llike this.
Click to expand...
Click to collapse
I've went through this on my Hercules, T-Mobile S2. I had Android tweaker pro, removed all of the tweaks, and rebooted. It took me quite a while but I was able to get into recovery by the normal button mashing.
DO NOT HAVE THE PHONE PLUGGED INTO THE CHARGER.
PRESS THE VOLUME BUTTONS THEN THE POWER BUTTON WHILE STILL HOLDING THE VOLUME BUTTONS.
AS SOON AS YOU FEEL THE FIRST VIBRATION, LET GO OF ONLY THE POWER BUTTON!
CONTINUE TO HOLD THE VOLUME BUTTONS UNTIL YOUR RECOVERY LOADS.
THAT IS WHAT HAS WORKED FOR ME.
Sent from my Skinny Hercules

Ok so to keep this post updated for people experiencing the same issues.
IT seems there is a hardware failure in progress.
BUT i managed to get a temporary fix, it seems that by having the ear plugs connected into the earphone jack in the phone, the phone becomes somewhat usable. I was able to get into recovery, and able to flash a new stock, and its up and running, but as i said this is only a temporary solution as the real issue is that the phone is not conducting the electricity in a proper way that allowed me to recharge my batteries until i had added the earphones...
The phone becomes unusable for me when i remove the earphones again, as i believe its failing to conduct the electricity from the battery properly through the motherboard without something connected into the earphone jack..
SO for people having issues with their phones, it might be a possible way to get your phone temporarily operational again.

Please Help !!
i kinda cloned my ROM , it happened by mistake while trying to flash my kernel , now that my phone is stuck in samsung start up logo , . tried to reboot still the same result. . . :crying:

No recovery ? If that's the case, stock rom from Samfirmware, flash with Odin to get a 'clean slate' (How ? Thread stickied near top of Q&A has instructions) & re-try whatever it was you wanted to do. If you do have recovery, try a factory reset in the first instance, if that doesn't work or if you have recovery but can't do one for whatever reason, proceed with the stock flash via Odin.

Thanks
thanks a lot mate , my fone back in action. successfully flashed, now running on JB 4.3.1 on Paranoidandroid 3.99-RC2 , so far so good .:victory:
being a newbei in this field hoping for all the support
EDIT : any suggestion how to remove warning symbol (yellow triangle) while booting .

Possibly triangle away.Search to get the free version.

desidarko said:
Ok so to keep this post updated for people experiencing the same issues.
IT seems there is a hardware failure in progress.
BUT i managed to get a temporary fix, it seems that by having the ear plugs connected into the earphone jack in the phone, the phone becomes somewhat usable. I was able to get into recovery, and able to flash a new stock, and its up and running, but as i said this is only a temporary solution as the real issue is that the phone is not conducting the electricity in a proper way that allowed me to recharge my batteries until i had added the earphones...
The phone becomes unusable for me when i remove the earphones again, as i believe its failing to conduct the electricity from the battery properly through the motherboard without something connected into the earphone jack..
SO for people having issues with their phones, it might be a possible way to get your phone temporarily operational again.
Click to expand...
Click to collapse
Okay so I have managed to get it to this point after day's of grief, now please tell me I don't have to walk around with the earplugs in for ever !

RustyNail99 said:
Okay so I have managed to get it to this point after day's of grief, now please tell me I don't have to walk around with the earplugs in for ever !
Click to expand...
Click to collapse
A friend of mine had am Android phone that had a similar problem. It always showed the headphones on the status bar and Could not be heard. If you will take your phone apart then you can look for bridges in the solder points. These happen from poor construction and over heating. Fix the bridges and you should be good to go.
Sent from my Skinny Hercules

fathertomany said:
A friend of mine had am Android phone that had a similar problem. It always showed the headphones on the status bar and Could not be heard. If you will take your phone apart then you can look for bridges in the solder points. These happen from poor construction and over heating. Fix the bridges and you should be good to go.
Sent from my Skinny Hercules
Click to expand...
Click to collapse
I did take it apart and had a quick look, all seems ok. However I was not ready to junk the phone so I improvised a little, its not pretty but it works.
I had an old headphone jack which I cut down so as it would just fit into the jack point, installed Soundabout Pro app which forces the calls to come out the earpiece and not headphones voila it works. In the end it cost me a lot of time surfing countless forums, anger management control and some joy at getting it to work. Still without the help people give on this and other forums it would be a useless phone :fingers-crossed:

sweetben747 said:
thanks a lot mate , my fone back in action. successfully flashed, now running on JB 4.3.1 on Paranoidandroid 3.99-RC2 , so far so good .:victory:
being a newbei in this field hoping for all the support
EDIT : any suggestion how to remove warning symbol (yellow triangle) while booting .
Click to expand...
Click to collapse
i was also searching for the same...... since triangle did not hurt but i wanted to know if i could get rid of it......
thanks to our wonderful Dev name Phliz i could do it... i had to reflash to stock for it ofcourse but then whole effort was worthwhile .....
http://forum.xda-developers.com/showthread.php?t=1877270
this is the link.... please go through... and best of luck to remove the triangle.....

Related

[STICKY THIS] Solution to Fix Any Brick

If your phone was bricked in any way, but still shows something on the screen when powered on or plugged in, try this.
1. Take out battery, put it back in. (to turn the phone fully off)
2. Don't turn it the phone on!
3. Plug the phone into your PC, do not hit the power button!
4. See if the phone shows anything on the screen
IF the phone screen does show the battery charger or something else on the screen after being plugged in without you hitting the power button, so far so good.
5. Now while it's on like this, hold the volume up and volume down buttons.
6. Hold the power button as well as the volume buttons until the screen goes black.
7. As soon as the screen goes black, let go of the power button! But DON'T let go of the volume buttons!
When done properly, this will always get you into Download mode. After that you should be able to use Odin to revert to stock, tar and instructions here:
http://forum.xda-developers.com/showthread.php?t=734475
This fixed my 'odd' bricks. Over and over again.
I'd say it's impossible to truly brick this phone.
I have been researching this most of the day, due to some testing I was doing, and the one thing I have come to realize is that this phone recovers well from "brick" it's not a true brick it's just scary. One of the posts I read, here on xda, said that unless the blue progress bar started advancing while using Odin, you can unplug, pull battery fairly safely.
davbran said:
I have been researching this most of the day, due to some testing I was doing, and the one thing I have come to realize is that this phone recovers well from "brick" it's not a true brick it's just scary. One of the posts I read, here on xda, said that unless the blue progress bar started advancing while using Odin, you can unplug, pull battery fairly safely.
Click to expand...
Click to collapse
Haha well that's exactly what happened to me. I flashed wrong with Odin and it failed halfway through, and I had no choice but to reboot the phone.
And when I did I got a truly odd screen. All I could see was a picture of a phone connected to an exclamation point connected to a laptop. That's it. Lol.
And I fixed it by doing this.
omg, i love you This totally fixed my problem XD
Everyone kept saying go to download mode, but no one ever said to "7. As soon as the screen goes black, let go of the power button! But DON'T let go of the volume buttons!"
super life saver... thanks alot
I actually did find someone else say to do that but it was out of luck as it was deeply buried. Don't remember where it was here lol
Its nice to have people who help us newbies
andershizzle said:
Haha well that's exactly what happened to me. I flashed wrong with Odin and it failed halfway through, and I had no choice but to reboot the phone.
And when I did I got a truly odd screen. All I could see was a picture of a phone connected to an exclamation point connected to a laptop. That's it. Lol.
And I fixed it by doing this.
Click to expand...
Click to collapse
Yea, last night I was messing around with the latest lag fix, but it ending up causing a lot of FC's, so I had to revert to stock a few times. I tried to make it work using ext2 and ext3, but it still wasn't stable enough. I didn't enjoy the noticeable speed increase, but it wasn't worth it since launcher pro was one of the programs that was FCing.
Anyways, so after I gave up for the 3rd time, I flashed stock using ODIN and it got stuck. I left it there for awhile with no progress and the phone's screen actually just went completely black. I pulled the battery and got the weird cell phone pointing to computer icon. I almost crapped my pants at that point. Very scary moment since I had not seen that screen before.
A quick google search for "bricked Vibrant" led me to this thread and voila! My Vibrant is alive and well again.
Thanks a bunch.
PS: After reflashing stock that many times, I still find it strange that after a fresh flash, I still get a noticeable speed boost by wiping the phone through the privacy setting. Not sure if it's a placebo effect, but I swear it makes a noticeable difference every time.
Maverick777 said:
Yea, last night I was messing around with the latest lag fix, but it ending up causing a lot of FC's, so I had to revert to stock a few times. I tried to make it work using ext2 and ext3, but it still wasn't stable enough. I didn't enjoy the noticeable speed increase, but it wasn't worth it since launcher pro was one of the programs that was FCing.
Anyways, so after I gave up for the 3rd time, I flashed stock using ODIN and it got stuck. I left it there for awhile with no progress and the phone's screen actually just went completely black. I pulled the battery and got the weird cell phone pointing to computer icon. I almost crapped my pants at that point. Very scary moment since I had not seen that screen before.
A quick google search for "bricked Vibrant" led me to this thread and voila! My Vibrant is alive and well again.
Thanks a bunch.
PS: After reflashing stock that many times, I still find it strange that after a fresh flash, I still get a noticeable speed boost by wiping the phone through the privacy setting. Not sure if it's a placebo effect, but I swear it makes a noticeable difference every time.
Click to expand...
Click to collapse
Glad I could help!
And that's intersting. I'll make sure to wipe the privacy settings. I actually haven't ever wiped them yet.
No go for me.
I used the stupid partition tool in rom manager. partitioned the internal memory not the sd card.
Saw a few others did this, and this worked for them, either right away or after flashing eugene's froyo rom then reverting back, but that rom just hangs on cache.fsd or something like that.
Trying to repartition through odin, with no download files selected right now. It does not appear to be doing anything, just set pit file, then do not turn off target in odin.
Will leave it for a bit, maybe try to flash this again, i think the issue might be deeper for me though. need kernel and everything else.
I did that but my phone locked up and now all I get is a picture of a yellow cation sign next to a little phone and pc pic.. anything I can do at this point or??
tried going into recovery and download mode but it wont let me past that screen.
Thank you so much for this, I received a replacement set 2 days ago and was playing around the the phone and I bricked it, it thought it was frozen so I pulled the batter and it bricked.
I followed your instructions and it works like a charm. What I did find though is that i can't seem you use odin on a mac even with a virtual machine. I had to use an actual PC.
tweezit said:
I did that but my phone locked up and now all I get is a picture of a yellow cation sign next to a little phone and pc pic.. anything I can do at this point or??
tried going into recovery and download mode but it wont let me past that screen.
Click to expand...
Click to collapse
This is exactly the screen I had. Follow my instructions exactly and you'll get into download mode (at least i did)
This should be made a sticky.
thank you thank you thank you
Sticky this thread.
Sent from my SGH-T959 using XDA App
Great find for all.
has anyone found a way to unbrick a flashed EU rom then the person flashed to US rom? and then the power wont come on? But the unit does get hot when plugged in?
Im trying to see if i need to jtag this thing. or if anyone had success?
Thanks
ok so my vibrant gave me the cell phone and computer screen i got it back in download mode. started odin to get it back to stock but no matter how long i let odin go nothing happens i got the files that i need for odin out of a thread on these forums and i have followed the directions to the letter and still nothing. any help some one can give would be great. thank you for your time.
How do I know if my phone is being picked up by Odin or being flashed?
did the same thing the clockwork partition wiped my internal memory
F**k!
woop guess im going to tmobile in the a.m. and playin the whole
idk what happened it wont turn on
thank god for the 14 day return policy!
I ran into "brick mode" myself 2 nights ago and could not get my phone into download mode. Any possible combo of volume key up/down and power had no effect. Just that phone exclamation point pc icon slowly blinking in the center of the screen. I did finally get it into download mode but it wasn't using any of the previously mentioned methods, so I'll add one more to the growing list to try. This one worked for me after almost 4 hours of experimenting.
BTW....my phone would never display the battery charging image when powered off and plugged in. Just this same annoying image.
Pull the battery. Put it back in. Hold the just the volume down button. Do not hold the power button. Plug in either a wall charger or USB cable. The cable will power up the phone and voila. I was in the download screen.
I also highly recommend the stock ROM from the thread
"[ROM] OFFICIAL T-Mo Vibrant JFD ODIN/Nandroid Backup Images 7/29/10 (Tested/Working)" In Vibrant > Vibrant Android Development
I tried another ROM found out on the internet and ended up with a shell that crashed and restarted every 60 seconds.
For those running into Odin stuck on a message about verifying the file system, I had no luck when the phone used COM3. I suggest moving your USB cable into different ports on your PC. Each new port will "install" a new instance of the phone using different COM ports. COM5 and COM6 both worked as I was reflashing the day away yesterday.

[Q] Charging paused due to over voltage

Over the last few weeks I've been noticing my battery levels fluctuating when I plug it in to charge and alot of the times my phone thinks it's still charging even when the plug is removed. Also when I switch off my phone- the battery charging icon keeps sporadically popping up preventing me from starting my phone- the only way to start it is to actually connect the charger and hit the power button.
I noticed this problem whenever I try any of the ICS roms- the error message 'Charging paused due to over voltage' keeps popping up. I've gone flashed various gingerbread roms thinking it was a software issue but now I think it may be a problem with my charging port. I also checked my voltage levels and they're hovering around 3.9V. Does anyone know what's happening and how to fix it?
Did You get Your handset liquid damaged? Might look like a silly question but i would sell mobiles myself and noticed that such symptoms might to be related to water/condensation damage...
Hopefully not in your case
Well no, my phone's been dry throughout. Never got it wet. The condition has progressively gotten worse over the last week. The switching off problem and ICS issues tipped me off that there was a problem here. All this time I thought my battery fluctuation issues were because of the rom/kernel
Probably the best idea would be to flash stock rom from your country and send it away for warranty repair, with a charger attached... no point fiddling with it yourself (especially that its not firmware related)
Good Luck
demondor said:
Over the last few weeks I've been noticing my battery levels fluctuating when I plug it in to charge and alot of the times my phone thinks it's still charging even when the plug is removed. Also when I switch off my phone- the battery charging icon keeps sporadically popping up preventing me from starting my phone- the only way to start it is to actually connect the charger and hit the power button.
I noticed this problem whenever I try any of the ICS roms- the error message 'Charging paused due to over voltage' keeps popping up. I've gone flashed various gingerbread roms thinking it was a software issue but now I think it may be a problem with my charging port. I also checked my voltage levels and they're hovering around 3.9V. Does anyone know what's happening and how to fix it?
Click to expand...
Click to collapse
Mine does the same - BUT it only started after I flashed an ICS ROM? And it's intermittent; some days it doesn't do it at all, then it'll do it all day... No logic to it? And my phone has never gotten wet either...
Ive had the same problem with all ics roms.now im back to stock gingerbreed.anyway ics on this phase is still beta and problems are normal. w8 for mpre stable rom dude.
lummujaj said:
Ive had the same problem with all ics roms.now im back to stock gingerbreed.anyway ics on this phase is still beta and problems are normal. w8 for more stable rom dude.
Click to expand...
Click to collapse
Of course; it's a funny one, though? I've just rebooted my phone several times, removed the battery, reinsterted, rebooted, and it's behaving again...
The weird thing is the problem has carried itself over to the gingerbread roms. The core problem is that my phone thinks the usb/power cable is plugged in when it's not
demondor said:
The weird thing is the problem has carried itself over to the gingerbread roms. The core problem is that my phone thinks the usb/power cable is plugged in when it's not
Click to expand...
Click to collapse
root the phone, go to recovery menu , go format system, data, all there one by one, turn off the phone , put it on download mode, and back to original stock rom
lummujaj said:
root the phone, go to recovery menu , go format system, data, all there one by one, turn off the phone , put it on download mode, and back to original stock rom
Click to expand...
Click to collapse
Just to clarify, I don't format efs and emmc yeah?
lummujaj said:
root the phone, go to recovery menu , go format system, data, all there one by one, turn off the phone , put it on download mode, and back to original stock rom
Click to expand...
Click to collapse
I did all that. Made naff all difference.
Hey guys, it's been solved. I ruled out any kind of software issues and finally went to a tech guy I knew. Told him that I think the USB port is malfunctioning and he removed it and started the phone & there were no issues. He replaced the USB circuit board for me for the equivalent of $17 (RM50). Phone is working just fine. Just so everyone knows I tried cleaning the port and even pushing the pin inside towards the display but they didn't work. All in all I can say that replacing the port is the only real solution because Gingerbread may be forgiving of the over voltage but ICS is going to keep giving the over voltage error every few mins which gets really annoying.
Anyone in Malaysia facing this issue should go see them because they were really helpful and replaced it on the spot. Also many other places said it would take a week to fix and were going to charge me RM150-200. This is a link to their lowyat post- http://forum.lowyat.net/index.php?act=ST&f=72&t=2099197&st=0#entry46541006
Glad to know i'm not the only one with this problem. Mine also only started when i put ics on my phone. And when I restored a gingerbread rom it still had the same issues also minus the voltage error. Looks like i'll have to put it back to stock and send it away.
Galaxy S II overcharging issue
Mine is doing the same... but in my case it has a hardware issue: I charged it with my car charger in the truck, but I put the charger at 24V output by mistake... Now my I9100 has that yellow triangle and it's work only when plugged in charger!

[Q] A very unusual bootloop on i9100

Hey everybody,
Recently, I got a bricked Samsung Galaxy S2 (I9100 - International) from my brother. He told me that it suddenly began rebooting randomly, when writing SMS or browsing the web, and after some time, it could not boot into android OS (stock ICS). He has not flashed or did anything unusual to his phone, it seems that the phone bricked out of the blue.
As mentioned earlier, I cannot boot into android. The phone reboots itself as soon as Samsung Galaxy logo appears. On the other side, I can boot into the Odin-mode (Download-mode) and recovery. The weird thing is that I can only access recovery and Odin-mode when the phone is connected via USB.
Odin-mode works without a hitch. Although in the recovery mode, the phone reboots itself randomly (sometimes after 2 seconds or even 10 seconds). Therefore the only way, I can install or do something with my phone is via Odin.
I have tried replacing stock recovery (the one that comes with ICS) with CWM recovery (varying from v4 to v6) without any luck (CWM also rebooted randomly). Afterwards, I have tried following this guide "Fix an unflashable or soft bricked GSII":
http://forum.xda-developers.com/showthread.php?t=1457458
I have succesfully managed to carry out everything in this guide (first with "ICS version" and afterwards with "Gingerbread version"). But the problem remains unsolved. The phone still cannot manage to boot up before it restarts and recovery reboots randomly. Do you have any suggestions what to do (without throwing the phone out )?
Thanks in advance
Go to download mode and flash stock 4.1.2 from sammobile.
andrewwright said:
Go to download mode and flash stock 4.1.2 from sammobile.
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Thanks for your quick response . I tried it without any luck. I was thinking: Could a faulty battery be causing all this? (even though when connected to USB the symbol shows that it is 100 % full)
Does it work ok with charger plunged in? How old is the phone/battery
andrewwright said:
Does it work ok with charger plunged in? How old is the phone/battery
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Click to collapse
With the charger plugged in, I can only access Odin-mode and partially recovery mode (because the phone begins randomly to reboot). The phone cannot boot into the normal Android OS, since as mentioned earlier, it reboots as soon as Galaxy logo appears.
Without the charger plugged in, the phone is completely dead. I can then access neither Odin-mode nor Recovery.
The phone is app. 1 and a half year old, while the battery has been replaced by warranty about 6 months ago (The warranty has recently expired).
Can you get a battery with out buying one? Test it with new battery. Has it bin dropped or water damage?
andrewwright said:
Can you get a battery with out buying one? Test it with new battery. Has it bin dropped or water damage?
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Click to collapse
The phone has some minor screen cracks on the side, but they appeared long time ago (almost just after my brother bought it) and the phone has fully functioned until a couple of weeks ago.
Talking of the battery, I could eventually try ordering a replacement battery from ebay. But I would only receive it in about 2 weeks.
Do you have any other tricks left up your sleeve? Or should I just go and order a new battery?
Can you flash in with odin? Thinking about it if it crashes half way thought then its definitely dead. Will it stay on if you put it in download mode or does it switch off
Sent from my GT-I9100 using xda app-developers app
Its Definately a Hardware Problem
As You Said Captain :
Your Phone is-
1/2yrs old (Not Bad)
6 Months old Battery (Warranty)
Completely Dead without Charger (Not Sure About this... it can be a [Battery] or a [Mother Board] issue)
Screen Cracks (Signifies that the phone has been dropped several times and might have damaged the interior parts)
Boots again and again (Must be because the phone has lost some registry files for Boot or this might be a Hardware issue)
Cannot Boot into Android (Definately a Mother Board issue or can even be a fault in software)
If you take a look at all this... this is really very excessive. The phone is in a really bad taste (as all its hardware might be damaged inside) ... If you have tried everything at your level best to change the software, and it dint work. Then this is surely a Hardware problem. Check your Hardware, Mainly the Battery (Even if you got it 6 months before) & the Mother Board. You will definately find a problem in any of these Hardwares inside.
Regards
andrewwright said:
Can you flash in with odin? Thinking about it if it crashes half way thought then its definitely dead. Will it stay on if you put it in download mode or does it switch off
Sent from my GT-I9100 using xda app-developers app
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The phone does not crash/reboot, when it is put in download mode. The download mode functions normally. I can flash the phone without a hitch. :fingers-crossed:
ksjd said:
...
If you take a look at all this... this is really very excessive. The phone is in a really bad taste (as all its hardware might be damaged inside) ... If you have tried everything at your level best to change the software, and it dint work. Then this is surely a Hardware problem. Check your Hardware, Mainly the Battery (Even if you got it 6 months before) & the Mother Board. You will definately find a problem in any of these Hardwares inside.
Regards
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Click to collapse
Well, I hope it is a minor problem or something with the battery, or else I would need to spend all my life savings in order to buy a new motherboard (It sucks to live on student grants)
Flash with odin. Keep trying if it holds power. May be a faulty recovery making it reboot.
Try changing Software Before doing any Hardware Changes
CaptainGoat said:
The phone does not crash/reboot, when it is put in download mode. The download mode functions normally. I can flash the phone without a hitch. :fingers-crossed:
Well, I hope it is a minor problem or something with the battery, or else I would need to spend all my life savings in order to buy a new motherboard (It sucks to live on student grants)
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hmm... So i guess its better you first try changing the software (as download mode runs well). If everything you tried fails... Then you better change the Hardware (I recommend)
Regards
Yer I guess so

[Q] Not working after loading flash

Hello,
I was flashing my GSII, and selected CyanogenMod.zip with the pid file in Odin. It seemed to be ok, and the next step was to reboot the phone, however, it is not rebooting. The screen is black, nothing is showing. I tried 2 different batteries... nothing. Buttons, volume up, down combinations, and nothing.
Any ideas? - is the phone dead?
Sounds cactus to me. Service centre.
Or you could search for KingRat's method to 'jump start' the phone with the charger minus the battery. Highly unlikely to work but worth a shot. So is a jig. But manage your expectations, the phone is more than likely toast.
Edit - Have you tried connecting phone to PC & firing up Odin/seeing if it registers ?
Thank you for the reply. I will look up the jump start method.
As far as odin goes, I didn't try it because phone is not showing any life signs, so i didn't bother. I'll try and report back, however, everything is showing towards a dead motherboard... I woke up today thinking of new ROM, and now I'm looking for the successor to my GS2
Yep sounds like something major on the MB has carked it, unfortunately. But try those things anyway, you never know.
MistahBungle said:
Yep sounds like something major on the MB has carked it, unfortunately. But try those things anyway, you never know.
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Click to collapse
Nothing is working. I tried King Rat's "jump start" several times, It's not working. And also, there is no communication with Odin.
However there is one weird thing. Earlier today when I gave up with trying to fix GS2, I removed the SIM card, and left the battery in, and I left it on the shelf. Now, when I went to get it to try the suggested stuff, the Phone was warm. I don't know why. Battery was warm, and the area around the camera was warm. Since I got two batteries (original and replacement), I tried the following:
I - cool down the phone and put the replacement in, after several minutes, nothing hot...
II - cool down the phone and put the original battery in, after several minutes, also, nothing not
Something is happening, and I don't know what.

[Q] SGS2 battery problem maybe?

Hey all,
so a few months ago my SGS2 went off. It was an interesting behave of it, it just started to turn off sometimes, without any reason, without any popups (eg. battery low) or anything. I was really curious about this problem but I didnt have a single idea of what happened to it. Like a week later, it didnt turn on at all. I disassembled it, and found out that my secondary microphones cable broke. I thought that was the problem, so I ordered a new module (which includes vibrating motor, secondary microphone, ear-piece, and the jack).. I waited 3weeks, the first one arrived broken. I waited another month, and today the second one arrived in one piece. I put it inside the device to see if it works but its not. NOW the problem is, like it was before I ordered this module, when I try to turn the phone on, it doesnt do anything at all.(with the broken secondary mic cable it did, it went till the samsung logo and then bam, blackout) IF I put it up on charger, it says the battery is FULL, and from then, I push the power button and it starts to turn on, but goes until the Samsung logo, or sometimes it did boot, but thats rare, and then again BAM, blackout. Now I was like wtf? So i tried to reach recovery, I did a full hard reset to the full stock SGS2 ROM, tried other kernels, recoveries, ROM's, but nothing helped me. NOW If i enter DOWNLOAD mode without the charger, it says "Low battery! Cant download." and this happens right after i plugged the charger out, and it told me that the battery is full (what a liar), but when i plug the charger in, I can reach DOWNLOAD mode, and Recovery mode too, but they do blackouts after a few minutes too...
Any ideas?
Would be happy if anyone could help me out...
thanks :good:
pandeszyo said:
Hey all,
so a few months ago my SGS2 went off. It was an interesting behave of it, it just started to turn off sometimes, without any reason, without any popups (eg. battery low) or anything. I was really curious about this problem but I didnt have a single idea of what happened to it. Like a week later, it didnt turn on at all. I disassembled it, and found out that my secondary microphones cable broke. I thought that was the problem, so I ordered a new module (which includes vibrating motor, secondary microphone, ear-piece, and the jack).. I waited 3weeks, the first one arrived broken. I waited another month, and today the second one arrived in one piece. I put it inside the device to see if it works but its not. NOW the problem is, like it was before I ordered this module, when I try to turn the phone on, it doesnt do anything at all.(with the broken secondary mic cable it did, it went till the samsung logo and then bam, blackout) IF I put it up on charger, it says the battery is FULL, and from then, I push the power button and it starts to turn on, but goes until the Samsung logo, or sometimes it did boot, but thats rare, and then again BAM, blackout. Now I was like wtf? So i tried to reach recovery, I did a full hard reset to the full stock SGS2 ROM, tried other kernels, recoveries, ROM's, but nothing helped me. NOW If i enter DOWNLOAD mode without the charger, it says "Low battery! Cant download." and this happens right after i plugged the charger out, and it told me that the battery is full (what a liar), but when i plug the charger in, I can reach DOWNLOAD mode, and Recovery mode too, but they do blackouts after a few minutes too...
Any ideas?
Would be happy if anyone could help me out...
thanks :good:
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Click to collapse
oh and if it matters, its GT-I9100, 2 years old.
if you can get your hands on a different battery, i would recommned you to test it with that too.
as your device is 2 years old and i am assuming you havent changed the battery yet, there are strong chances of battery life getting over.
banjara said:
if you can get your hands on a different battery, i would recommned you to test it with that too.
as your device is 2 years old and i am assuming you havent changed the battery yet, there are strong chances of battery life getting over.
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Click to collapse
thanks for your response!
well today i am about to test a new battery, i hope thats what the problem is... an extra thing, and yes im stupid because of this but i left my battery in the phone for the 2 months while it was off... a friend told me that it can cause the batterys death, is that possible?
If u want to leave your phone switched off then it's better to charge it and then remove the battery from the phone. So there is a possibility that your battery is Screwed because of that time when you kept it in the phone itself.
Sent from my SM-G900H

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