please help! BOOTLOOP Problem with CyanogenMod - Galaxy S II Q&A, Help & Troubleshooting

Hey Folks,
Yesterday i tried installing CM9 Nightly on my SGS2 (no root). I followed the "Full Update Guide at the CyanogenMod-Forum but ended up with the bootloop problem even though i precisly followed the steps here: http://wiki.cyanogenmod.com/wiki/Samsung_Galaxy_S_II:_Full_Update_Guide
Now my s2 wont boot and is showing the yellow triangle. I can get into Recovery Mode which shows "CWMR Touch v.5.5.0.4.".
i downloaded the latest nightly build but when i tried flashing CM9 as described i got an error message "verification failed".
any help is appreciated!

hi
try putting the phone in odin mode and install another rom

Factory reset first when you have bootloop.

no need to worry.
get the nightly again dont use the torrent. it should be 118 mb.
using cwm format system, data, preboot, cache.
now flash again. you should have the file on ur ext sdcard already.

If worst comes to worst then download a offical samsung firmware from http://forum.xda-developers.com/showthread.php?t=1075278 or from http://forum.xda-developers.com/showthread.php?t=1113928 if carrier branded phone then open odin and flash the files within download mode. If you don't know how to use odin then follow the guide within the first link

How come there will be a boot loop if everything is followed precisely?
You can try flashing the same again
#*posted on the move *#

Do This
the_goat said:
Hey Folks,
Yesterday i tried installing CM9 Nightly on my SGS2 (no root). I followed the "Full Update Guide at the CyanogenMod-Forum but ended up with the bootloop problem even though i precisly followed the steps here: http://wiki.cyanogenmod.com/wiki/Samsung_Galaxy_S_II:_Full_Update_Guide
Now my s2 wont boot and is showing the yellow triangle. I can get into Recovery Mode which shows "CWMR Touch v.5.5.0.4.".
i downloaded the latest nightly build but when i tried flashing CM9 as described i got an error message "verification failed".
any help is appreciated!
Click to expand...
Click to collapse
Bro just remember that you must never flash a rom from within CWM or Rom Manager with our sgs2. I also did that and had same issue. Now, you can get into recovery mode and that is awesome. First things first, wipe everything, full system wipe, full wipe cache, full wipe sd card(format), next, attach your sgs2 to your pc and mount usb storage, transfer your chosen rom to sd card(I use Hydrogenics which is awesome). Next, unmount sd card, now flash hydrogenics. Now reboot system once hydrogen is finished flashing. You should never have issues like this again, especially with Hydrogenics. Also, do not forget to put gapps ics on sd card and flash it after you have flashed Hydrogenics. You can also use yellow triangle away app to remove the stupid leftover triangle from your previous rom flashing attempts, if you got LPB. Anyways bro, have fun and do not stress too much because the sgs2 is really hard to brick. Also, remember to check the md5 sum when downloading a rom, this lets you know it has not been tampered with and the entire rom is there.

Related

[Q] Can't Install Roms - Phone is poorly.

I shall try to explain the situation best I can.
A long time back, I rooted my S2, then I thought I would sell it, so I wanted to put it back to stock and unroot, which I did.
Now months later, I decided to root the phone once again and put another rom on.
To cut a long story short, currently my phone wont accept any roms of any kind.
If I install CM7, MIUI, Sensation Rom, all of them seem to install a kernel as well, which causes the phone to panic upon boot. Which puzzles me, because if they are made for the S2, then why are they causing problems with my phone?
The only kernel that works for me so far is CF-Root-SGS2_XW_XEU_KE2-v4.0-CWM4. This allows me to access the internal SD via usb and put on roms. But I can't install them. As every time I do, I just either get a kernel panic or a black screen. I even used this guide, which should be foolproof and all I get is a black screen.
My phone has been in this useless state for 24 hours now and I've googled until I feel asleep at the keyboard.
Im hoping someone can seriously help me with this, as I don't pretend to know what I'm doing.
I was on ICS before this happened.
If you want your phone back then use the method in cnet to get it working again
and about the roms issue, did you factory reset and full wipe your phone before installing a rom?
I reset and wiped everytime. If I follow the cnet instructions to the letter, it just hangs on the Galaxy S2 logo when you turn on the phone and doesn't go any further. The only solution is to put on the kernel I mentioned above to get access to the SD card on my pc.
I now have managed to get CM7 RC working, but that's not the one I wanted. I wanted to use the Sensation rom, but that installs its own kernel which my phone, for some odd reason, doesn't like.
My phone details now are:
CM Mod 7.2 RC1
Kernel 2.6.35.14-g68ea119
[email protected] #1
1.Boot into recovery
2.Full wipe
3.Wipe cache
4.Advanced->Wipe dalvik cache
5.Install sensation rom zip only
6.Reboot
7.Wait for 5 mins
I followed your instructions precisely. I then installed SensatioN_ROM_3.0_ICS_i9100.zip from this thread
It installed, installed a kernel, flashed modem and said done. I then rebooted and waited.
It comes up with the S2 logo with the triangle, fine but now It just shows a battery symbol with a circle in the middle. After a while it goes to black and then comes back. Like its rebooting over and over.
I unplugged the usb cable and instead of the batter I just get the logo with the triangle. That stays there for a while, goes to black and comes back. Over and over.
I can't even get to recovery. Only thing I can do now is go into download mode and start over, put on the kernel I know that works, install CM7 RC1 and then at least I have a phone. But why sensation rom doesn't work is a mystery to me.
X82X said:
I followed your instructions precisely. I then installed SensatioN_ROM_3.0_ICS_i9100.zip from this thread
It installed, installed a kernel, flashed modem and said done. I then rebooted and waited.
It comes up with the S2 logo with the triangle, fine but now It just shows a battery symbol with a circle in the middle. After a while it goes to black and then comes back. Like its rebooting over and over.
I unplugged the usb cable and instead of the batter I just get the logo with the triangle. That stays there for a while, goes to black and comes back. Over and over.
I can't even get to recovery. Only thing I can do now is go into download mode and start over, put on the kernel I know that works, install CM7 RC1 and then at least I have a phone. But why sensation rom doesn't work is a mystery to me.
Click to expand...
Click to collapse
Don't install anything else
Repeat the steps without any modem or anything
Any try to redownload the zip
How do I stop the install of the modem? The thread only shows one zip file and if I install that in recovery, it installs everything. I can't chose what parts to install. Do I have the wrong zip?
X82X said:
How do I stop the install of the modem? The thread only shows one zip file and if I install that in recovery, it installs everything. I can't chose what parts to install. Do I have the wrong zip?
Click to expand...
Click to collapse
Just install this zip by the method above
https://docs.google.com/open?id=0Bzv8B0L32Z8lZ2hSanUtVHpSb0tFUlhkRVQ1RFhEUQ
Nothing else
While it downloads from google, I just want to clarify.
Wipe data, wipe cache, wipe dalvik. Then I go to install zip from sd. Find SensatioN_ROM_3.0_ICS_i9100.zip, then it installs. But the last time I did this, it scrolls up saying it was installing file system, then flashing kernel, then flashing modem.
Am I doing something wrong here?
And that google link is slow as hell, quoting me 7 hours to download it. Got it from hotfile instead, going to try that one.
X82X said:
While it downloads from google, I just want to clarify.
Wipe data, wipe cache, wipe dalvik. Then I go to install zip from sd. Find SensatioN_ROM_3.0_ICS_i9100.zip, then it installs. But the last time I did this, it scrolls up saying it was installing file system, then flashing kernel, then flashing modem.
Am I doing something wrong here?
And that google link is slow as hell, quoting me 7 hours to download it. Got it from hotfile instead, going to try that one.
Click to expand...
Click to collapse
Yes it should work like that if you have a i9100
Done exactly as you said. I downloaded it from the hotfile link instead and installed it.
Came up with the same thing.
Cleaning Old System files
Installing System
Data Files
Symlinks
Flashing Kernel
Flashing Modem
Ready
Then I reboot and the same looping over and over. Can't access recovery. Only solution is using odin to flash the kernel I used before and be forces to use CM7 since nothing else works.
It's so confusing as Im using the same hardware as everyone else on the sensation rom thread, but it wont work for me. at all.
you sure you have i9100?
GT-I9100
I'm totally puzzled. MIUI doesnt work, Sensation doesnt work and stops me from using recovery. The only thing that works is kernel CF-Root-SGS2_XW_XEU_KE2-v4.0-CWM4.tar then install CM7 RC1 which upgrades the recovery to version 5 and the phone works. But only on CM7. If I try to install any other rom, it dies a death.
X82X said:
GT-I9100
I'm totally puzzled. MIUI doesnt work, Sensation doesnt work and stops me from using recovery. The only thing that works is kernel CF-Root-SGS2_XW_XEU_KE2-v4.0-CWM4.tar then install CM7 RC1 which upgrades the recovery to version 5 and the phone works. But only on CM7. If I try to install any other rom, it dies a death.
Click to expand...
Click to collapse
And don't tell me that you flash cf-root after flashing every rom from recovery
No, I only flash that when the rom seems to corrupt it. Like when installing sensation. The only way I can access the SD card to put on another rom is to install that kernel.
X82X said:
No, I only flash that when the rom seems to corrupt it. Like when installing sensation. The only way I can access the SD card to put on another rom is to install that kernel.
Click to expand...
Click to collapse
This is really weird
Maybe someone else can help you
Sent from my x10i using Tapatalk
ok lets try again........
1: forget everything [ideas you have.]
2: go into clockwork recovery
3: format every partition including system / boot [remove your sdcard before starting]
4: use odin and flash stock 2.3.6 LA2 [u can flash whatever you like] and let it boot.
5: now use cf-root and root your device [http://forum.xda-developers.com/showthread.php?t=1103399 ]
6: i assume you know your way from here.
note: its very important to format system / boot partions
if yo dont have cwm or you want to try from scratch heres the latest cwm
http://www.mediafire.com/?wkki6xahfhb3bim
Thanks for info. Just to clarify, the cf-root link contains loads of different ones. How do I properly know which one to use or doesn't it matter? And as for the stock 2.3.6 LA2, again, where do I find that? Reason I ask dumb questions is I don't want to assume and try the wrong one and come back here and complain when it was my fault, I just want to be 100% sure, so again sorry for the obvious questions.
I flashed I9100XXLPQ_I9100OXALPQ_I9100XXLPQ_HOME then CF-Root-SGS2_XX_XEO_LPQ-PROPER-v5.4-CWM5.
It seems to be working fine now with the default rom. However, when I go into recovery to say perform a backup or mount the sd card, It won't have any of it.
When I try to mount the sd card it just says "error mounting sd card" and when I mount usb storage it says "unable to open lunfile (no such file or directory)". So I don't want to try another rom yet.
X82X said:
I flashed I9100XXLPQ_I9100OXALPQ_I9100XXLPQ_HOME then CF-Root-SGS2_XX_XEO_LPQ-PROPER-v5.4-CWM5.
It seems to be working fine now with the default rom. However, when I go into recovery to say perform a backup or mount the sd card, It won't have any of it.
When I try to mount the sd card it just says "error mounting sd card" and when I mount usb storage it says "unable to open lunfile (no such file or directory)". So I don't want to try another rom yet.
Click to expand...
Click to collapse
lol when i said or what you want i meant from GB you flashed a ICS ROM. well do this and this time just do what i say......
use odin again and flash XILA2 . after boot dial *2767*3855# [a must]
after reboot you should be running a problem free ROM.
now from CF-root find LA2 and flash that now play with it a while and than you do whatever as now you know where and how to get back to working ROM.
plus after LA2 you will find everything on your phone works so any problem you get on other roms is not hardware
recovery issues should be fixed now. otherwise use odin and again flash that cwm file i posted earlier. you wont loose root
Download ROM from Here

Rooted i9100 ics rom fail, please help

Hi I have rooted my UK i9100 with odin and successfully installed resurrection remix previously. When trying to flash an updated version I stupidly forgot to factory wipe and now my phone wont boot, it gets stuck on the rom boot screen and i cant get into cwm.
I can get into download mode and from there have tried flashing another rom via odin (litening rom) to see if that would boot to get me into cwm but that freezes on the boot screen also. I tried to use Galaxys2recovery as shown on zedomax youtube channel but then realised that is done from gingerbread only. I tried reflashing "CF-Root-SGS2_XX_OXX_LP6-v5.2-CWM5" via odin and then the litening rom again but that still hangs when trying to boot.
Is there something obvious I should be doing? ..I am (unsuprisingly) a noob
Thank you
you could have asked at the first time itself, before various yourown attempts ?
if you are able to get CWM now, try to install the ROM after data factory reset and all the wipes + system format from Mounts & storage.
if it didnt help again go to CWM do all the wipes and format system, and switch off and get into the download mod and flash a GB stock rom from ODIN
I can get into download mode and from there have tried flashing another rom via odin (litening rom) to see if that would boot to get me into cwm but that freezes on the boot screen also
Click to expand...
Click to collapse
odin if for stock roms not custom roms / .zip files....
zaheedahmed said:
if it didnt help again go to CWM
Click to expand...
Click to collapse
that's the thing, i cant get into cwm, or at least i don't know how to. Is there a file I can install from odin that will put me straight into cwm without having a working rom?
why do you wait to boot the phone to get into the CWM,
didnt you try Vol-up+Home+Power while phone is off

CAn't revocer I9100m

Hello
Here is short story:
I rooted i9100m, everything was fine (method entering recovery, open cwm and install busybox)
So I wanted to install cm9 and took rc2 for sgs2, boot into recovery, 1st I did wipe factory reset (took very long) and clicked on reboot phone after reseting, instead of install from sd... (no big deal I was thinking). Phone could not move from boot screen even after taking out battery and restarting.
After that we tried CM9 from cwm, CM9 with odin( version for odin of cm9). always the same, stuck in boot. I found this soft brick unbrick thread on this forum and tried flashing stock rom (bell canada) nothing....even tried stock ginger..same story. when I tried to wipe reset data I get kernel panic (after every flashing I tried to reset/wipe). Sometimes its "kernel panic" sometimes "E: /data could not be mounted or found" (something like that)
I still can enter download or recovery mode
I searched whole forum for solution but I couldn't find it
PS: there was a method with ODin using this pit and repartition but from provided download link was only stock rom nothing else.
please help

[Q] Galaxy S 2 Boot Error

Hi Everyone! just a rookie here in need of a bit of advice.
I'm a Galaxy S II I9100 owner and have my phone rooted and all setup with custom roms and been comfortable with flashing for some time now. My ROM of choice recently was Vanilla Rootbox and have to say the ROM has been fantastic with very few bugs to report. Last night i recieved the OTA update via Goo Manager for Vanilla Rootbox 3.4. I downloaded the full update over wifi and flashed with all wipes no worries. Next step was to flash the latest GAPPS and i figured there would be nothing wrong with flashing the GAPPS zip i had on my sd card that i had downloaded the last time i was notified of a GAPPS update via Goo manager as well. After flashing, wiping everything and rebooting again. My phone then booted up to a series of dialog boxes indicating that many google processes had stopped functioning. apps.google.com etc etc. A similar error has been reported in the Vanilla Rootbox thread by another user but i wasnt able to report this bug their either because my post count is too low to post in a development forum. So after seeing this error i rebooted into recovery to flash my last backup but CWM recovery came back with an error messaging stating it couldnt mount either ext or int sdcard. i did a factory reset which made no difference to the problem whatsoever. I then downloaded ODIN and the latest stock ICS Rom and flashed it via ODIN with no reported errors. My phone now boots through the optus boot animation and is stuck at the Galaxy S 2 screen with the flashing red and yellow animation over the S. If i turn off the phone with the power button, the phone turns off and immediately starts again and gets stuck at the flashing s screen. I've taken the battery sim and ext sd card out and put it all back in only for the problem to persist.
If anyone could help me there's a donation and my thanks in it!
Much appreciated
Nick
tried to re flash another stock ROM?
If so, tried factory reset the phone after the flash?
As long as you can get to DL mode, you are good to keep on flashing till you are up & running.
And then you got this
Remember to update your kies and make sure you close it all up before flashing with odin. If you are in 4.0.4 beware of the brick bug.
gastonw said:
tried to re flash another stock ROM?
If so, tried factory reset the phone after the flash?
As long as you can get to DL mode, you are good to keep on flashing till you are up & running.
And then you got this
Remember to update your kies and make sure you close it all up before flashing with odin. If you are in 4.0.4 beware of the brick bug.
Click to expand...
Click to collapse
Kies has never been installed on this computer but i did use the usb drivers mentioned in the soft brick recovery guide you linked. I used some information from the guide to flash this stock rom but i couldnt flash or wipe the partition because im unsure where to get the .PIT file required? i cant get past the boot animation so no factory reset possible and yes i can still get into download mode!
darkstar117 said:
Kies has never been installed on this computer but i did use the usb drivers mentioned in the soft brick recovery guide you linked. I used some information from the guide to flash this stock rom but i couldnt flash or wipe the partition because im unsure where to get the .PIT file required? i cant get past the boot animation so no factory reset possible and yes i can still get into download mode!
Click to expand...
Click to collapse
wow wow, leave pit files alone for now, they are nasty.
What stock ROM did you flash? 4.0.4 or 4.0.3?
You can factory reset via recovery mode.
Try installing kies anyway, it can't never hurt. Just make sure all applications are closed before you re-flash.
here's jb leak, might help:
http://www.sammobile.com/2012/11/15/i9100xxlsj-%E2%80%93-galaxy-s-ii-android-4-1-2-jelly-bean-test-firmware/
Right so i flashed I9100XWLP8 stock rom (4.0.3). Just then i flashed Siyah Kernel and attempted to use the factory reset function in recovery there, i get a message down the bottom mentioning that it can't mount my internal SD.
darkstar117 said:
Right so i flashed I9100XWLP8 stock rom (4.0.3). Just then i flashed Siyah Kernel and attempted to use the factory reset function in recovery there, i get a message down the bottom mentioning that it can't mount my internal SD.
Click to expand...
Click to collapse
Tell me your:
Model
Firmware
Country
Carrier
Always mention this
try flashing jb leak (ROM, modem & kernel package).

[Q] I9100T Odin flash OK, Download and recovery OK, stuck at logo!

Hi folks, mid last week I woke up to a non responsive Galaxy S2. It's been happily running stock Vodafone ICS for over a year, and somehow spontaneously went soft brick on me. Gets stuck at logo screen or goes into boot loop.
Download mode is accessible. I can flash through Odin (1.85 and 3.09) and it reports success. I have successfully put CWM (various versions) on it can can boot into them fine.
Recovery mode is also accessible and appears to be working fine. I can access external SD card no problem.
Attempting to flash through zip from external SD aborts with Mode 7, reporting bad zip or unable to read source file. I have tried removing asserts from install script (educated myself to the risks and made sure the ROM was correct!!) and multiple versions of CM (10.1.3 stable, 10.2 nightly) and multiple versions of CWM recovery (6.0.2.9 is what I've been using mostly, as recommended by CM guide)
Tried running GS2ROMNukeV2.12.zip which reported successful wipe, then attempted zip install from SD with same result (aborted mode 7). Repeated wipe and attempted stock (I9100TDVLSK_I9100THUTLSD_I9100TDVLS3_HOME.tar) from flash through Odin. Reported success, phone booted into recover and applied KOR CSC successfully, then reboot and still stuck at logo screen/boot loop.
I have attempted the fix in http://forum.xda-developers.com/showthread.php?t=1449771 as best I could wish the resources I could find, but it's hard to follow to the letter with the links broken!!!
I have not tried repartition with PIT as I'm not sure where to get an appropriate PIT file. Advice on this appreciated!
I want to make this clear because people seem to not want to believe it: I did not soft brick my phone flashing it. My best theory at this point is some kind of memory corruption or hardware failure that's causing a boot loop. Any help or suggestions would be appreciated. This week I will probably take it in to a repair shop and hope for the best, but tomorrow is a public holiday and I've got nothing to lose by trying any more suggestions.
Kaine said:
Mode 7
Click to expand...
Click to collapse
If memory serves me right this is due to an old version of Recovery, i had the same thing, updated recovery and it flashed zip fine. just as you know. :fingers-crossed:

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