[CM9] Investigation on Bootloops - Galaxy S I9000 Q&A, Help & Troubleshooting

Hey folks,
being stuck in bootloops is one of the most annoying things for us powerusers.
Therefore I want to investigate a little bit deeper into this topic.
The normal procedure of "solving" the bootloops for me was flashing a base Gingerbread ROM by Ficeto (Mostly JVT) via ODIN, disabling Lagfix, entering CWM & flashing ICS again.
But one time (about 2 weeks ago) I had no time to go through this process, so I took the battery out of the phone (to abord the bootprocess & shut the phone down), placed it in again & putted the phone back in it's pocket.
About one hour later when I looked at it by accident (wanted to check the clock & forgot that it was bootlooping) the phone was fully booted & back to normal.
so the last 4 times my GT-i9000 (running nightlys of CM9) got stuck on the Bootscreen coming again & again, I took the battery out, placed it in again & let it bootloop for a while & after about 20 minutes baaam my SGS was properly booted?!
So my question/request is for you if you are stuck in bootloops:
[highlight]Please try the following:
1. Take the battery out & place it in again
2. Start the phone again
3. wait, wait, wait & be patient
4. Tell me if the problem solved itself or if after more than 2 hours of bootlooping nothing happened [/highlight]
if it didn't please tell me how long you've waited, what caused the looping & which nightly etc you where running!
just for clarification: with bootloops i mean being stuck on the Samsung Galaxy S / Cyanogenmod Screen where it is written in plain text which appears before you can enter recovery or the normal bootanimation appears. When my phone was/is bootlooping I also have no chance to enter Recovery. & I also know that it sounds strange that BL should solve themselves, but please try it!
[edit] I also read some time ago that there where other people with the same experience, this is why I opened a thread & I'm sure this is not a thing related to only my phone

I experienced something similar , also with CM9 . Phone working very hard , so i restarted it , but after the Galaxy S GT i9000 screen , the CM9 blue boot loaded for about 10 minutes and nothing , so I decided to enter in recovery ( I removed the battery , waited a minute , inserted it in the phone , and the recovery didn't work . Waited 10 minutes , and after that the recovery worked , and I reflashed CM9 , because it was the only rom I had in the internal SD card .

About two hours without any improve... CM9 build 12 working every time, build 15 and 16 without chance. Odin is my honey

Thomas. said:
About two hours without any improve... CM9 build 12 working every time, build 15 and 16 without chance. Odin is my honey
Click to expand...
Click to collapse
It would be nice if you could tell exactly what you did, if more people would do that we might be able to figure out why this thing happens to you and why it doesn't happen to me.
when i flash:
*phone not connected to pc or charger
*running stock kernel
*16 gb micro sdcard mounted
*all sorts of battery percentage, from 10 to 100 percent
*reboot recovery by terminal command "reboot recovery"
*format /cache
*flash the build from /mnt/sdcard/download
*flash gapps from same location
*run a script that wipes dalvic, removes several sounds and unwanted apps and fixes permission
*format /cache again
*reboot
I know this is a pretty weird procedure and it's in no way an advice to anyone, it is just an example of giving details that might lead to a common factor for bootloops.
Taptalked u see

Ok briefly (as I'm not home at moment) I have had bootlooploop on 2 separate occasions. Both times I left for 35 mins looping & then removed battery.
After 20 mins I put battery back & same thing - looping for around 30 mins.
No recovery available on both occasions. I tried taking out Sim card & external SD but this didn't make any difference.
So I just flashed CM7 kernel via Odin = problem fixed !

BLADESMAN1889 said:
Ok briefly (as I'm not home at moment) I have had bootlooploop on 2 separate occasions. Both times I left for 35 mins looping & then removed battery.
After 20 mins I put battery back & thing - looping for around 30 mins.
No recovery available on both occasions. I tried taking out Sim card & external SD but this didn't make any difference.
So I just flashed CM7 kernel via Odin = problem fixed !
Click to expand...
Click to collapse
Thanks for your post!
What caused the bootloops?

fipsib said:
Thanks for your post!
What caused the bootloops?
Click to expand...
Click to collapse
1st time I got bootlooploop was [15/Jan/2012] I was trying to boot into Recovery via power button so I could upgrade from Build 12 to Build 13.
2nd time [2/April/2012]I was on AOKP B28 & I had booted into Recovery to wipe cache & dalvik & after successfully wiping, the bootloop came when I hit the 'Reboot' option to start the phone.
(AGAINST better judgement - since first bll I had avoided wiping cache & dalvik)

jep. I also had bootloop problems by wiping cache and dalvik cache. I was on SlimICS flashed midnight kernel. Everything was working just right but CPU scaling had some bugs for me so i removed init.d scripts went into recovery wiped cache and dalvik cache...and boom....bootloop :/. Now I'm back on CM7 because this is a rather annoying problem....

BLADESMAN1889 said:
Ok briefly (as I'm not home at moment) I have had bootlooploop on 2 separate occasions. Both times I left for 35 mins looping & then removed battery.
After 20 mins I put battery back & same thing - looping for around 30 mins.
No recovery available on both occasions. I tried taking out Sim card & external SD but this didn't make any difference.
So I just flashed CM7 kernel via Odin = problem fixed !
Click to expand...
Click to collapse
Can you link me CM7 kernel for Odin? thanks

farid993 said:
Can you link me CM7 kernel for Odin? thanks
Click to expand...
Click to collapse
Yep, here it is,
View attachment 1012442
This worked for me both times
[remember to leave UNCHECKED
Ensure Reboot, Repart, F-Reset]
Then boot into Recovery and restore Nandroid - no need to be flashing gingerbread.

Ever since the first nightly, I have been plagued by bootloops. Usually formatting /system, /data and /cache helped. But not this time. I tried to install the 19/4 nightly, and had gotten into bootloops. Yes, I have used custom kernels before.
However, even clearing init.d, clearing NSTools, flashing from FixRecovery, the cm7 kernel, even flashing with Heimdall (flashing stock kernel and custom kernel) could not get me out of the loop. Note: I tried the method as described in the OP.
What I finally did was format everything, excluding ext-sd. Format internal SD as well, after backing up some files. And BAM! That was it! Something on the SD corrupted the install. No bootloops, can even install custom kernel, no problem.
So, that may be a tip for people not able to get out of the bootloop, or experiencing constant bootloops.

Hey it's under Devs investigation now:
http://forum.xda-developers.com/showthread.php?t=1627689

My galaxy with CM9 started to bootloop yesterday, no way to enter recovery
I'll make you know in a couple of hours if something change leaving it on ..
If nothing change, is there a place where I can find CM9 kernel to flash with odin ?
thanks

Read Bejda's post, one post above yours.
Taptalked u see

wooops didnt see the second page of the thread
anyway leaving it there to bootloop didnt solve the problem
flashing semaphore kernel seems yes

Related

[Q] Help! bricked + corrupt system?

I've been looking all over this site but I can't find anything. I suppose that it's partly because I'm not sure about the problem myself.
A couple of months back (maybe more) I upgraded to the ICS infinitum rom (blue version) with midnight kernel. It was great - the phone worked fine. Well I'm exaggerating, it ****ed up every once in a while. Programs would automatically shut down and it would get really slow after a while. But all in all it wasn't bad, and it was stable enough for me most of the time....
Then, last Thursday everything seemed to go apart, every program on the phone was shutting down. So I thought I'll just restart and it will be fine. When I did, the phone did not come back on. the kernel would load and then it was stuck on the start-up animation in infinite loops.
Now, to be frank, this isn't the first time this has happened. So I didn't panic. Last time I just used the CMW recovery to re-install the kernel and the rom (I keep the files on the sd card). But this time, I wanted to try to avoid the factory wipe for as long as I could, and try finding a different option, knowing that if all else fails, I have something to revert back to.
Then I did the mistake of deleting the init.d file without re-installing anything. I wanted to, but accidentally clicked on the 'reboot now' option. And then all went to ****. The kernel didn't load. I went to recovery and it couldn't mount the sd card so I couldn't re-install it.
I tried flashing a new kernel using odin, and it did get me a bit better: my CWM recovery can read the sd. However, I still can't mount the system. Even worse, when I get to the infinitum zip roms and re-installing it brings up the status 7 error (which, after searching, seems to come up for different reasons for each person)
Despite installing a new kernel, when I reboot the phone now it doesn't load the kernel anymore, it just stays stuck on the welcome screen. I tried using the recovery to re-install a different kernel, it worked, but the phone still won't start - it now automatically skips to the recovery mode. I don't know if I should try flashing a rom through odin, and I'm too afraid to try anything at all now...
Can anyone help me? Is there any way to restore the init.d file or maybe that has nothing to do with my problem?
uvii said:
I've been looking all over this site but I can't find anything. I suppose that it's partly because I'm not sure about the problem myself.
A couple of months back (maybe more) I upgraded to the ICS infinitum rom (blue version) with midnight kernel. It was great - the phone worked fine. Well I'm exaggerating, it ****ed up every once in a while. Programs would automatically shut down and it would get really slow after a while. But all in all it wasn't bad, and it was stable enough for me most of the time....
Then, last Thursday everything seemed to go apart, every program on the phone was shutting down. So I thought I'll just restart and it will be fine. When I did, the phone did not come back on. the kernel would load and then it was stuck on the start-up animation in infinite loops.
Now, to be frank, this isn't the first time this has happened. So I didn't panic. Last time I just used the CMW recovery to re-install the kernel and the rom (I keep the files on the sd card). But this time, I wanted to try to avoid the factory wipe for as long as I could, and try finding a different option, knowing that if all else fails, I have something to revert back to.
Then I did the mistake of deleting the init.d file without re-installing anything. I wanted to, but accidentally clicked on the 'reboot now' option. And then all went to ****. The kernel didn't load. I went to recovery and it couldn't mount the sd card so I couldn't re-install it.
I tried flashing a new kernel using odin, and it did get me a bit better: my CWM recovery can read the sd. However, I still can't mount the system. Even worse, when I get to the infinitum zip roms and re-installing it brings up the status 7 error (which, after searching, seems to come up for different reasons for each person)
Despite installing a new kernel, when I reboot the phone now it doesn't load the kernel anymore, it just stays stuck on the welcome screen. I tried using the recovery to re-install a different kernel, it worked, but the phone still won't start - it now automatically skips to the recovery mode. I don't know if I should try flashing a rom through odin, and I'm too afraid to try anything at all now...
Can anyone help me? Is there any way to restore the init.d file or maybe that has nothing to do with my problem?
Click to expand...
Click to collapse
I suggest flash 3-file GB rom via odin with ticked re-partirion and phone bootloaderupdate.
First of all init.d has nothing to do with the boot of kernel and ROM itself. It's just like autostart in Windows, so if it's missing it shouldn't cause problems.
My solution is to flash a complete stock Gingerbread ROM using Odin. You can get them at sammobile.com. Then afterwards flash a custom kernel and then whatever you like.
If you need help,feel free to ask me
Sent from my Gameboy Color
Yes! Thank you! That worked!!
It happened again! just 10 days later.
Is the Infinidtum rom ****ed up in any way?
it's stuck on the loading part of the rom

Device is stuck on boot logo

Hello, I have a problem with my Galaxy Note and I don't know what to do.
A few hours ago I tried to start the device as I usually do after I turn it off, but the device does not turn on and only stays stuck on this screen: "Samsung galaxy note n7000".
I'm running this Rom: "[ROM][4.1.2 JB]Ultimate N7000 XXLSC JellyBean 4.1.2 v5.1".
I have the ability to log into CWM by the combination of the known keys
I hope you guys can help me, thanks in advance.
(Note: The battery is charged and i also tried to remove it and put it back in.)
This problem happened to me before with the xxlsa leaked rom
Do a wipe from a safe kernel and flash the rom again
Try to boot into recovery and do a reboot recovery and then reboot.
Else you may do a backup and restore the same backup. It works most of the time. But a little time consuming.
Had same problem by loosing power. The device wont boot anymore. Fix per, reinstall without wipe did not work. Switch rom
i believe this problem comes to all jelly bean leak always Stuck on the first boot.
just got this problem again how i did it ?press power on Stuck on first boot next step straight away press 3 button go to recovery n hit reboot system n my phone bootup n back to normal.
terminator_5505 said:
This problem happened to me before with the xxlsa leaked rom
Do a wipe from a safe kernel and flash the rom again
Click to expand...
Click to collapse
How can i replace the kernel and reinstall the rom if I cannot see the device on my computer when it's connected?
nokiamodeln91 said:
Try to boot into recovery and do a reboot recovery and then reboot.
Else you may do a backup and restore the same backup. It works most of the time. But a little time consuming.
Click to expand...
Click to collapse
I've already tried both methods you have specified and none of them worked.
My attempt to make a Nandroid backup has failed and the CWM said something like "backup of /data failed".
alvinhaw said:
i believe this problem comes to all jelly bean leak always Stuck on the first boot.
just got this problem again how i did it ?press power on Stuck on first boot next step straight away press 3 button go to recovery n hit reboot system n my phone bootup n back to normal.
Click to expand...
Click to collapse
Hi, this is not the first time I try to boot the device after installing a new rom.
I'm with this rom for a few weeks now and the problem occurred only yesterday.
This is well known problem with xlsc rom. U have to wipe everything and to flash rom. There are some solutions with backup/restore but they didn't work for me.
So, complete WIPE, and than flash!!
Backup of data failed because of insufficient space. Make backup to internal if there is more space.
i have the same problem since i full wipe and flashed asylums 20130302 build. after doing a full wipe and clean install, i started downloading my regular apps from playstore and suddenly it turned off just like when you remove the battery.
i tried the following::
1. full wipe and installed the rom -- it boots up few minutes then shuts off and wont boot up without charger
2. restored from nandroid -- same as above
3. full wipe and installed previous builds -- same
4. full wipe + flashed latest build 20130303 + latest gaps for JB 4.2 -- same
5. check battery stat -- ok
whenever it shuts off, it wont turn back on unless without a charger. it just shuts off at random. this is the second day I'm experiencing it and its frustrating.
any help? thanks
edit:: btw it shuts off at boot animation
In the other thread where you asked this question too there are members who replaced their battery and solved it this way.
Maybe you should try this and replace the battery.
Good luck.
I got same issue and I'm for kill someone. Why these problems on a official rom?

[Q][GT-I9001] Ivendor CM10 plus CastagnaIT Kernel (from Softreboot to Hardbrick)

Hello everyone,
I just hardbricked my SGS+ and now I'm a bit curious how this could happen.
This is what I did:
I used to run CM9 RC5 from arco68 along with the Kernel for ICS from Christopher83 and CWM 6.0.1.2.
Because my phone always lost the wifi-connection and also had some freezes I decided to try out CM10 Beta 3 from ivendor.
I backuped my phone, downloaded the zips and even verified the MD5sums. Next I flashed CWM 6.0.1.9 as recommended in the thread from ivendor.
After exporting the nandroid backup and other stuff like photos to my computer I wiped everything as mentioned in the thread, flashed the two zips and rebooted. Everything went fine and I was almost ready with setting up my phone again when I got my first softreboot.
Suddenly it showed the CM-bootlogo and after maybe 10 seconds I was back on my homescreen. I got another two or three softreboots until I decided to flash the Kernel 3.x from CastagnaIT.
I rebooted into recovery, wiped cache and dalvik cache, flashed the zip and rebooted.
Now I wanted to reboot into recovery again to fix permissions but instead I got a softreboot and my phone stuck at the CM10 bootlogo.
I waited for around 5 minutes and then I just turned the phone off and booted into the recovery mode.
Because I wanted a clean install without any problems like softreboots I decided to wipe my phone again (data, cache, system) and just reflash the zip for CM10. And at this point everything went wrong.
I flashed CM10 but when I tried to flash gapps my phone just turned off. And no, the battery was not empty. In fact the battery was at around 50-60% and my phone was also connected to my computer.
I tried to turn on my phone but now it stuck at the Samsung bootlogo.
The next thing I did was probably a horrible mistake. I tried to un-brick my phone but I did not realize that I could boot into download mode without problems so I guess my phone wasn't softbricked at all.
Well, after that I still stuck at the Samsung bootlogo and couldn't enter recovery mode. I got into download mode somehow and maybe this was my second mistake. I tried to flash the "i9001Reset.zip" via Odin. Everything went fine but when Odin said "Close serial port and wait until rebooting" my phone was completely dead. I think it was while I tried to flash the reset-file when I got a message like "MBR: read failed". So somehow I managed to destroy my master boot record.
Now I can't turn on my phone or enter download nor recovery mode. I already removed the battery for about 45 minutes but this didn't work either.
My phone is dead but at least I saved the important data and maybe I'll get a new one through warranty. Or I just buy a Nexus 4.
My questions are:
What did I do wrong especially when I tried to save my phone?
How can I prevent such things from happening?
And at which point I should have got help here in the forum or elsewhere?
I would really appreciate some tips for the future because I already flashed and used a lot of different ROMs but this is the first time something really went wrong.
Thanks for reading and thanks for your help in advance.
(Please excuse my non-perfect englisch.)
Greetings,
Mangoniter

[Q] Phone boots only to CWM, Cannot access sdcard0, No new ROM, kernel,etc.

Hi,
My SGS GT-I9000, running cm-11-20140504-SNAPSHOT-M6-galaxysmtd ran out of battery over night (thats already happend many times before ), but this time it can boot up only into CWM (v6.0.4.8).
I am running this ROM since the release date and i have ran out of the battery many times in this period of time, so i don't think it is a problem of new ROM, kernel, etc.
Next thing is that I cannot access sdcard0, it doesn't let me install zip or mount sdcard0.
Little details: the phone gets into CWM even if i try to charge it, without pressing any button. For that few moments before it go into CWM it doesn't show the battery status animation.
Edit: factory reset do nothing
Edit: odin didn't work
Thanks for any help.

galaxy note 4 (sm-n910t) caught in boot loop and won't enter to recovery.pls help

my galaxy note 4 (sm-n910t) caught in bootloop . i dont know what caused it. the phone simply restarts upto first bootscreen, ie upto 'samsung galaxy note 4' and then vibrates and then restarts.this process continues upto battery is down or i pull out battery.the phone is not entering to recovery mode but enters to download mode.
i have tried installing stock rom from sammobiles but it won't help.i have also installed custom recovery twrp but that also won't help to enter to recovery mode,
i am trapped pls help..
You didn't mention how you tried to install the stock ROM . Did you use Odin?
I just fixed mine with the same issue. I was able to boot into recovery and download mode but mostly download mode without bootloop when I had the usb cable plugged in. I used ADB when I could to boot into download mode, but the buttons worked too. Trying to restart the phone only lopped after the Google screen.
I followed several guides here to flash stock with Odin and wipe cache etc but none solved my boot loop issue. almost gave up but there is a video on You Tube that said the battery warping in the cause of the boot loop. The battery, after/during quick charge, may heat up and change shape causing the issue. Today I installed my new battery purchased on amazon and no more issues.
Now I am on stock and have to find a good rom.
If you do decide to flash back to stock there are a lot of good guides. You may find yourself stuck on the T-mobile screen for 15 minutes when booting for the first time but that is ok. If you still boot loop after installing stock and wiping cache I would try the battery.
Nabeel mhd said:
my galaxy note 4 (sm-n910t) caught in bootloop . i dont know what caused it. the phone simply restarts upto first bootscreen, ie upto 'samsung galaxy note 4' and then vibrates and then restarts.this process continues upto battery is down or i pull out battery.the phone is not entering to recovery mode but enters to download mode.
i have tried installing stock rom from sammobiles but it won't help.i have also installed custom recovery twrp but that also won't help to enter to recovery mode,
i am trapped pls help..
Click to expand...
Click to collapse
hi OP,
did you find any solution to your problem?
Hello all. I'm also pasting this in the T-mobile thread in case it can be of benefit to someone. This is advice to use as a very last resort if you are experiencing the recovery bootloop issue AND you don't have the emmc failure bug. I had the recovery reboot, sudden shutdown with no warning, etc. issue for the past two weeks. I tried everything on Google and Youtube to fix my problem with no success. I flashed multiple stock ROMS and recovery tars (stock and TWRP) via ODIN, but nothing worked. Oddly enough, I never received the emmc error that I have read about. Also, in the few times that my phone booted normally, I even loaded the Wakelock Power Manager app, set it to partial wakelock and my phone STILL continued to bootloop. As a last resort, I bought a new battery, but the reboot problems continued in Android 4.4.4 Kitkat, 6.0 Marshmallow, 7.1 Nougat and 8.1 Oreo ROMS. Well, here is what finally helped me to get my phone back operational. I had a backup ROM from a previous install and a TWRP flashable version of the same ROM on my SD card (in case the phone did not stay on for the full restore). I put the phone into a ziplock bag into a freezer for about 20 min. (thankfully this time TWRP stayed on long enough for me to do the following):
1) copy all the files I wanted to save from internal storage to a computer.
2) performed a full wipe (Dalvic, Cache, System, etc. Like when flashing a ROM, but this time also internal storage. Note: Please do not wipe both internal and SD card, as you may have a difficult time trying to load the ROM file back on the sd card (assuming you don't have a card reader).
3) After wiping, I was able to restore my stock ROM backup (or you can just flash the stock ROM).
I can't be 100% sure, but I think my wiping internal and then flashing the stock ROM finally did the trick. Since this morning, the phone has been pretty much back to as it was before. In either case, I'm sharing this with the hope that it helps someone else.
Sent from my SM-N910T using Tapatalk
chrismcnally123 said:
I just fixed mine with the same issue. I was able to boot into recovery and download mode but mostly download mode without bootloop when I had the usb cable plugged in. I used ADB when I could to boot into download mode, but the buttons worked too. Trying to restart the phone only lopped after the Google screen.
I followed several guides here to flash stock with Odin and wipe cache etc but none solved my boot loop issue. almost gave up but there is a video on You Tube that said the battery warping in the cause of the boot loop. The battery, after/during quick charge, may heat up and change shape causing the issue. Today I installed my new battery purchased on amazon and no more issues.
Now I am on stock and have to find a good rom.
If you do decide to flash back to stock there are a lot of good guides. You may find yourself stuck on the T-mobile screen for 15 minutes when booting for the first time but that is ok. If you still boot loop after installing stock and wiping cache I would try the battery.
Click to expand...
Click to collapse
Thanks sir! I have the same issue! it's working now after replace the battery

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