Samsung Galaxy S2 not booting - Galaxy S II Q&A, Help & Troubleshooting

I rooted my phone without any trouble for months, and its been working just fine, until now! Then, I had to do a factory reset. The normal procedure, SETTINGS> PRIVACY> factory reset. The phone then never got past the boot logo. It starts to load, and just gets stuck at the Samsung logo, and nothing else. there's two lights glowing from the capacitive buttons, and that's all. I'm on 4.1.2 JB stock rom. Later, I tried to enter recovery mode, and did a wipe, and cleaned cache partition also. AND, the phone just sprung to life, the whole first time set up thing. I started filling in stuff and the phone just shut down again, and if I tried to reboot again, it doesn't get past boot logo. But if I wipe n do it, it happens but shuts down immediately Please help!!
Sent from my GT-I9003 using xda app-developers app

Boot into download mode, get a stock rom from Samfirmware, flash it with Odin (How ? Thread stickied near top of Q&A).

Related

[Q] Stuck in weird bootloop.

So I've been using Kang's ICS preview for about a week, and I really liked it, except from some bugs such as freezing after not using it for a few hours.
Today when I got back from school, (not used the tab for 7 hours) I tried to turn it on but I couldnt get past the loading screen, so I turned it off by holding the power button for a few secs.
Now I just cant get it to load up normaly, its just goes to the bootscreen, stucks, then its impossible to turn it off.
I tried going in to CWM and wipe data/cache but that freezes too.
Is there any other way to wipe it and install another rom like Overcome?
Mine did this as well. It would hit the Samsung loading screen and never go any further. I basically had to unroot it and take it back to stock via ODIN. Hopefully this works for you.
Hit up this link and download the big blue link at the top labeled DOWNLOAD:
http://forum.xda-developers.com/showthread.php?t=1474971&highlight=odin
Follow the directions to get into the Download Mode, then jump down the unrooting part.
After its done with the download it will reboot automatically. Soon as it does this make the tablet go into Recovery Mode. It should go through a script and reboot automaticly. Again don't let it boot normally, make it go into Recovery Mode. I think it took a few times for me and then it eventually went into Recovery. I then did a factory reset and rebooted. Now I have an unrooted Samsung firmware. Back to scratch though, but fine with me! I was getting worried I wouldn't be able to get it back.
Oh...and this process will wipe your internal memory as well.

[Q] Stuck at boot after upgrade Revolution HD

Hey guys,
I just upgraded to Revolution HD 32.0 (coming from 31.0).
Here's what i did.
Boot into recovery.
Clear cache+dalvic-cache.
Install zip from sd-card (select revolution hd 32.0)
Started Aroma installer, left everything pretty much default, just removed some of the samsung junk.
After the install was finished i cleared the cache again and rebooted the device.
It started with the start up logo and after a minute or so "Android upgrading..." with the applications counting.
After that it shows "Finishing boot"
Then nothing, it stays at that for like 5 minutes, then reboots and stays stuck at the samsung logo.
So i decided to boot into recovery, whipe caches and fix permissions and reboot again.
Same thing happened as before.
So i wanted to do a full clean install of the rom, wiping all userdata.
Surprise! Can't get into recovery or download mode anymore.
Took out battery for a few minutes and put it back in.
Still can't access download mode or recovery with vol+menu+pwr...
Does anyone know what's going on, or better, how i can possibly fix this?
I have no idea how to access my device now to make changes...
Thanks a lot!
If you can't get into bootloader with vol down, home and power button then you have a brick, service centre repair required.
Worth trying a USB repair jig to get download before paying for a repair .
jje

Galaxy S2 urgent problem

First off all sory on my bad English.
Few hours ago I did factory reset on mentioned phone. I choose to format external memory ( in phone ) and phone switched off. When turned on it showed some text in German ( phone from austrian network ) and samsung logo appeared. Since that colors run trought logo and nothing happening. Phone is rooted with syiah kernel, on stock rom. What to do???
huh I don't understand the problem.
do you want to change the language or a bug in de logo.
if the language its simple just in settings
if its something glitchy (screen, boot or the logo)
try to go back to stock with stock kernel.
can you take a picture? :highfive:
Phone wont boot up. Just logo changing colors.
How long have you left it running? If you do a complete factory reset, the phone has to rebuild the dalvik cache, which, as there is loads of crap on stock ROMs, can take quite a while. Leave it running on the boot screen for 5 minutes or so, and see what happens.
Sent from my GT-I9100 using xda app-developers app
TheReverend210 said:
How long have you left it running? If you do a complete factory reset, the phone has to rebuild the dalvik cache, which, as there is loads of crap on stock ROMs, can take quite a while. Leave it running on the boot screen for 5 minutes or so, and see what happens.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
I left it for 2 hours
Normally when doing a factory reset your phone should boot into recovery, perform the wipe and boot the system again. Maybe something went wrong during this process and you ended up with a corrupt data partition. Try booting into recovery by hand (volume up + home + power button) and perform a data wipe there. Reboot again and see if it's booting again.

S3 (I747) Powering off During Boot

Started two days ago. Phone would randomly power off and boot back up. Finally it shut off and would not power back on. I had Cm11 installed with CWM 4.0.4.6. The phone powers on after inserting the battery. The Samsung logo flashes and then it shows the "Galaxy S3" logo with the CM logo below it. The phone the powers off. I have done a factory reset, cleared both caches, formatted the system folder, flashed SlimKat from recovery and tried another known good battery. At this point I figured I would reflash CWM but if I put the phone into download mode, it powers off after just a few seconds as well.
If I boot the phone into CWM, the phone stays on as long as I want it to so it makes me think this might be fixable. Just need some help.
Ask in your device forums.
My apologies. Didnt realize there was another S3 board. Found and posted there.

[Q] Help! S3 mini hangs, infinite reboots, no recovery

Hi!
My samsung s3 mini just freezed the other day while I was texting. I lost my patience after 5-10 minutes and pulled the battery. It started up again, and now it just reboots, runs about 1-2 minutes, reboot, runs another minute and continues so on... I was running full stock. No root what so ever.
If it's to any use, I can't delete anything on the phone when it's running. Photos, apps etc... It disappears at first but when the phone has rebooted again all the things that I deleted is still there.
Now here's the thing. It won't go into recovery mode. When I try, it freezes at the first screen, no yellow triangle showing.
Here's what i've tried:
- Flashing another kernel with odin. Tried to flash CWM, according to odin it's succesful, but it's the same thing as before when I try to boot in recovery mode. I also tried flashing a stock kernel but with same results.
- Flashing a stock ROM with odin. Same thing. Odin says it's succesful, but it's the same ROM as before the flash.
- Factory reset in settings on the phone (yeah, I tried doing a factory reset on those 2 minutes lol). When I click the delete button nothing happens.
I've searched the entire internet lol... No one seems to have the same problem as me.
What can I do?
Big thanks in advance.. :laugh:

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