S2 Not Booting

[karothacker]

So yesterday morning I went to turn on my phone, but nothing happened. It was on the charger all night so it should have been a full battery.

Here are my symptoms:
1) AC plugged in without battery - Phone's screen turns on for a second, turns off, and then repeats.
2) AC plugged in with battery - Phone will start to charge (has the loading symbol in the battery), but then turns off immediately. It cannot boot into recovery. It CAN boot into download mode, but my computer will not recognize it to restore the phone with odin.


Any ideas?

I don't have an official upgrade until October, but I'm going to call customer service to try and get them to bump the date up so I can get a new phone.

 

[creepyncrawly]

First possibility to suspect is a failed battery. If you know someone else with an s2, ask to borrow their battery temporarily to see if your phone will boot. Or perhaps go to an AT&T store to see if you can borrow a battery.

If it's not the battery, then the next step to try is to boot into download mode with the battery out of the phone to see if Odin will recognize the phone with the battery out. With the battery out of the phone and the USB cable plugged into the computer, hold down the vol down button while plugging the USB cable into the phone. The computer will supply the power. This assumes that you have the proper "Samsung USB driver for mobile phones" installed on your PC.

That's a start.

 

[sfb14]

I am having the same issue with my s2. i had shostock installed on it a few weeks back and it was working fine. then it just stopped working. i tried rebooting but it keeps on going on bootloops. I tried using odin to flash back to stock but no go, just bootloops. kies just dont work for me. i know it isnt the battery cuz i have the charging cradle to charge the battery and the phone goes to odin mode without the battery. Any help is appreciated.

 

[creepyncrawly]

I am having the same issue with my s2. i had shostock installed on it a few weeks back and it was working fine. then it just stopped working. i tried rebooting but it keeps on going on bootloops. I tried using odin to flash back to stock but no go, just bootloops. kies just dont work for me. i know it isnt the battery cuz i have the charging cradle to charge the battery and the phone goes to odin mode without the battery. Any help is appreciated.

It sounds like you got a successful flash of stock. Boot into recovery and perform a wipe data/factory reset.

 

[sfb14]

It sounds like you got a successful flash of stock. Boot into recovery and perform a wipe data/factory reset.

I just did. Still no boot.

 

[creepyncrawly]

I just did. Still no boot.

OK. Did the flash to stock succeed? In other words, you got a pass in odin?

Which version of SHOstock was installed, the latest? And which version of stock did you flash?

 

[sfb14]

i flashed SHOstock v3 before all of this happened. i flashed ucle5 stock rooted. battery icon flashes capacitive keys blink over and over again. if i unplug it nothing happens. i may have to try UCKH7 once im done downloading it.

** after flashing KH7, i go to recovery to wipe/factory reset... there is a message saying

Installing Multi-CSC...
"can't access to '/system/csc/ATT/system/'
Successfully applied multi-CSC

 

[creepyncrawly]

i flashed SHOstock v3 before all of this happened. i flashed ucle5 stock rooted. battery icon flashes capacitive keys blink over and over again. if i unplug it nothing happens. i may have to try UCKH7 once im done downloading it.

** after flashing KH7, i go to recovery to wipe/factory reset... there is a message saying

Installing Multi-CSC...
"can't access to '/system/csc/ATT/system/'
Successfully applied multi-CSC

This is sounding a bit like nand read/write corruption, which is fixable. Try this:

1)Go to this post and download the Tar version of Siyah 2.6.14 Kernel. Flash it in PDA without ticking Re-Partitioning.

2) Successful? Nice. Next, flash the full stock Gingerbread distribution from the Download Repository, I777UCKH7 including the bootloaders and everything, in the PDA slot.

3) If that is successful and boots normally you are done. If it is not, then:

4) Download the SBL Bootloader from the Download Repository. Flash it as PDA in ODIN, without ticking Re-Partitioning.

5) Flash the Kernel, as in step 1.

6) Flash the full stock Gingerbread distribution, as in step 2.

 

[sfb14]

Will try that later. Thanks for your help!

Sent from my SAMSUNG-SGH-I337 using xda premium

 

[sfb14]

still no luck.. i did everything odin says "PASS" but it just wont boot. i'm going to try and get a different battery and see if that works.

thanks for your help sir. :good:

 

[stuckmoto]

still no luck.. i did everything odin says "PASS" but it just wont boot. i'm going to try and get a different battery and see if that works.

thanks for your help sir. :good:

Going through the exact same issue with my kids phone with the same results. Tried creepy's 6 steps, but still no luck.
I think it was caused by my kid killing the battery.

update: got it to boot into custom recovery, then reflashed ROM. It stills acts weird though. Very laggy.

 

[Teknodad1974]

http://mobiletechvideos.mybigcommerce.com/samsung-galaxy-s-ii-at-t-usb-port-repair/


Sent from my SGH-I777 using xda app-developers app

 

[jvick920]

Having a very similar issue here.. Battery icon flashes then black screen. Boot to download mode.. Push up arrow, black screen. Computer does not register device connected.

Sent from my SGH-I997 using xda app-developers app

 

[creepyncrawly]

Having a very similar issue here.. Battery icon flashes then black screen. Boot to download mode.. Push up arrow, black screen. Computer does not register device connected.

Sent from my SGH-I997 using xda app-developers app

It's hard to give any suggestions with this little information. More information would be useful. A lot more information would be more helpful.

 

[jvick920]

It's hard to give any suggestions with this little information. More information would be useful. A lot more information would be more helpful.

When I plug then phone in (automatically turns on when plugged in, power button is broken), the battery logo and hardware buttons flash erratically for up to a minute then nothing at all. I've tried different batteries and different cords. The only thing that seems to bring it back to life is letting the phone and battery sit unplugged for 2 weeks up to a month and trying again, but it's very hit or miss. This only seems to happen when the battery completely drains.

 

[creepyncrawly]

When I plug then phone in (automatically turns on when plugged in, power button is broken), the battery logo and hardware buttons flash erratically for up to a minute then nothing at all. I've tried different batteries and different cords. The only thing that seems to bring it back to life is letting the phone and battery sit unplugged for 2 weeks up to a month and trying again, but it's very hit or miss. This only seems to happen when the battery completely drains.

What phone do you have... the AT&T SGH-I777 does not have hardware buttons, but maybe you mean the capacitive buttons which are part of the display? Your previous post was sent from an Infuse? If it's not an I777 then you need a different forum.

If the phone that has the problem is an SGH-I777, then... what firmware is/was it running? Is it rooted? Is USB debugging turned on? Have you been able to boot into download mode since your first post? How long was the power button broken before this problem first manifested?

I think you need to get into download mode and flash stock firmware.

You also may need to see if you can do something about the broken power button, since that may be involved in the problem. That would mean either taking the phone apart and trying to mechanically clean the button or move/press/activate it a lot to get the dirt out so that the problem clears itself, or it may mean getting it replaced.

 

[jvick920]

What phone do you have... the AT&T SGH-I777 does not have hardware buttons, but maybe you mean the capacitive buttons which are part of the display? Your previous post was sent from an Infuse? If it's not an I777 then you need a different forum.

If the phone that has the problem is an SGH-I777, then... what firmware is/was it running? Is it rooted? Is USB debugging turned on? Have you been able to boot into download mode since your first post? How long was the power button broken before this problem first manifested?

I think you need to get into download mode and flash stock firmware.

You also may need to see if you can do something about the broken power button, since that may be involved in the problem. That would mean either taking the phone apart and trying to mechanically clean the button or move/press/activate it a lot to get the dirt out so that the problem clears itself, or it may mean getting it replaced.

It is the I777, capacitive buttons is what I meant.. I apologize, I'm still fairly new with terminology.. Yes, I have an Infuse also, it's my backup phone because I can't get the s2 to charge. It is rooted and flashed, running 4.2.2 (Avatar ROM)

The problem is, it isn't holding enough of a charge to do anything. Aside from the previously stated issue, it will go into download mode, but the screen will only stay on for maybe 5 seconds max. The power button has been broken about 6 months before this issue arose. This only started happening about a month ago when I let the battery discharge completely. To test my theory that it's a battery/charging issue, I got a backup battery (which allowed the phone to work again) and I allowed that one to discharge completely. Now I'm having the same issue with both batteries. I was able to get the phone to power on once after letting the phone and battery sit disconnected for about 2 weeks.

 

[creepyncrawly]

It is the I777, capacitive buttons is what I meant.. I apologize, I'm still fairly new with terminology.. Yes, I have an Infuse also, it's my backup phone because I can't get the s2 to charge. It is rooted and flashed, running 4.2.2 (Avatar ROM)

The problem is, it isn't holding enough of a charge to do anything. Aside from the previously stated issue, it will go into download mode, but the screen will only stay on for maybe 5 seconds max. The power button has been broken about 6 months before this issue arose. This only started happening about a month ago when I let the battery discharge completely. To test my theory that it's a battery/charging issue, I got a backup battery (which allowed the phone to work again) and I allowed that one to discharge completely. Now I'm having the same issue with both batteries. I was able to get the phone to power on once after letting the phone and battery sit disconnected for about 2 weeks.

What firmware is/was it running?

Is it rooted?

Is USB debugging turned on?

Did it charge the second battery fully more than once?

How long did it operate with the second battery?

 

[jvick920]

What firmware is/was it running?

Is it rooted?

Is USB debugging turned on?

Did it charge the second battery fully more than once?

How long did it operate with the second battery?

Firmware is CM 10.1, it is rooted, running AvatarROM. USB debugging and mock locations were turned on. It had no issue charging while it was working, it was after I allowed the batteries to die that I started having issues. Even on the second battery, it would continue operating as long as I kept it charged.

 

[creepyncrawly]

Firmware is CM 10.1, it is rooted, running AvatarROM. USB debugging and mock locations were turned on. It had no issue charging while it was working, it was after I allowed the batteries to die that I started having issues. Even on the second battery, it would continue operating as long as I kept it charged.

I have never used Cyanogen Mod or any of the other AOSP firmware, and I don't know how the firmware would affect this issue, if at all. But I suspect there may be some link.

I think what you need to do is to flash back to stock firmware, or perhaps use one of the stock plus root packages, and then a custom kernel, and then reload CM 10.1. So try this:

Pull the battery and leave it out. Open Odin3 on the desktop and then while holding down the volume buttons, plug in the usb cable. See if the phone will boot into download mode this way, and if Odin will recognize it. If so, then go ahead and flash the stock of your choosing. I think if it were me, I would flash 4.0.4 UCLL6 plus root.