[Q] CM7 Bootloop - Galaxy S II Q&A, Help & Troubleshooting

Well, this is what happened.
My phone was using cMiui 4.1.2 with the default kernel, and this morning I tried to flash CM7. I wiped everything as always before flashing, after I pushed reboot system and it got stuck in the "Galaxy s2" screen and keeps turning on and off endlessly.
I pulled out the battery, try to get back into recovery, but it hadn't been a successful attempt.
I stayed claim and flash back to stock 4.0.4 via Odin, god-bless I made it through.
I installed a custom kernel and flash to CM9 for temporarily use. Now I don't know what to do.
I really want to try the taste of CM7, please help.
Edit: I also tried various way of flashing, such as flash a codeworkx kernel before flashing, and flash back into GB 2.3.5 before flashing CM7, both didn't work out

it was making me crazy for weeks and here is the solution i found 5 minutes ago :
when it gets bootloop
go to download mod and flash siyah 2.6.14 via odin!
then it boots.

Related

can't mount in recovery and kernel panics

Hello,
Today I thought, let's try out ICS! Found this guide (can't post outer links, search for "android advices ICS Android 4.0.1 XXKP2 " in google), and used it to update my phone to ICS.
Well, after trying out the rom, I would like to go back to my MIUI backup, rooted it, installed clockworkmod recovery and booted up the recovery mode. The recovery said "can't mount /cache/*" for all cache folders. So I couldn't restore my backup.
After reading some stuff I installed a recovery through Odin. Worked like a charm, no alerts of mounting failures. Restored my backup, but when it was rebooting it gave an "Kernel Panic - Upload mode" screen. Couldn't do anything, so put the battery out and back in.
After this I installed ICS again with the same steps as in the guide. This worked! Rooted and installed recovery again, no problems so far. Tried a fresh install of MIUI but with the same problems.
So I can flash ICS but I can't flash any other rom, what can be the problem?
Every help and tips are welcome!
Thanks in advance!
Same thing happened to me last nite, kernel panic, and im panic too. This happened after flashing that cm9 coz i just wanna try and see how cm9 look like and i know im not going to stick with it, just for trying. Now im back to miui.
What i did is i flashed back to stock rom, root, then flash miui, or any rom that you want. Very simple.
Rom : MIUI ICS XGT 'EXTENDED'
Kernel : Xcell-69X
Modem : XXKP8
Sent from Galaxy SII
I have the same problem I guess, tried ICS, went back to stock which I was using. Got Kernel panic upload mode several times, solution for this was flashing an older 2.3.6 version.
After this no more kernel panics...
But I can't flash any custom roms anymore.
My phone's working luckily but it doesn't work like it's supposed to
Gepstra said:
I have the same problem I guess, tried ICS, went back to stock which I was using. Got Kernel panic upload mode several times, solution for this was flashing an older 2.3.6 version.
After this no more kernel panics...
But I can't flash any custom roms anymore.
My phone's working luckily but it doesn't work like it's supposed to
Click to expand...
Click to collapse
Thats not true my friend, you flash any custom rom. Nothing need to worry about.
Rom : samsung stock firmware
Kernel : stock kernel
Modem : stock modem
Sent from Galaxy SII
Gepstra said:
I have the same problem I guess, tried ICS, went back to stock which I was using. Got Kernel panic upload mode several times, solution for this was flashing an older 2.3.6 version.
After this no more kernel panics...
But I can't flash any custom roms anymore.
My phone's working luckily but it doesn't work like it's supposed to
Click to expand...
Click to collapse
Did you make sure to flash back the old GB bootloaders? Restoring a backup wont flash them back.

Stock ROM doesnt work

Hi there.
I had a custom rom on my Galaxy S3, and I wanted to go back to stock rom. Before I had a custom rom, I checked my product code, just in case if I ever wanted to flash stock rom. So, I downloaded a stock rom from sammobile and flashed it with Odin. I had a successful flash, but when the phone rebooted, it stopped at the samsung logo and it's like that every time I turn on the phone.
I aslo tried to flash it with the same rom, but from a different site (androidfirmwares), but every time I treid to do that, Odin crashed ( Odin downloader has stopped working).
I can't even boot into CWR to flash any custom rom, cuz it's gone. There is only stock recovery.
Please help
Which Rom were you trying to flash when this happened, and give details of how you flashed please
luka46 said:
Hi there.
I had a custom rom on my Galaxy S3, and I wanted to go back to stock rom. Before I had a custom rom, I checked my product code, just in case if I ever wanted to flash stock rom. So, I downloaded a stock rom from sammobile and flashed it with Odin. I had a successful flash, but when the phone rebooted, it stopped at the samsung logo and it's like that every time I turn on the phone.
I aslo tried to flash it with the same rom, but from a different site (androidfirmwares), but every time I treid to do that, Odin crashed ( Odin downloader has stopped working).
I can't even boot into CWR to flash any custom rom, cuz it's gone. There is only stock recovery.
Please help
Click to expand...
Click to collapse
if you are getting stuck on the boot screen after you flashed the stock rom this always works..go to recovery do a data reset and wipe cache.
this is really weird and a stupid thing I did when I was completely new to android..a little over a month ago.I got stuck on the boot screen and accidentally flash CF-Root instead of the stock firmware..when the phone rebooted it worked just fine.I dont think its supposed to work that way..:S
ahmedmaaiee said:
if you are getting stuck on the boot screen after you flashed the stock rom this always works..go to recovery do a data reset and wipe cache.
this is really weird and a stupid thing I did when I was completely new to android..a little over a month ago.I got stuck on the boot screen and accidentally flash CF-Root instead of the stock firmware..when the phone rebooted it worked just fine.I dont think its supposed to work that way..:S
Click to expand...
Click to collapse
I did as you said and it works :laugh:
Thank you :good:

[Q] I9100 bootloop after flashing stock 4.0.3

Hi all,
Having a strange issue. After giving my phone in for servicing, Samsung wiped it and put 2.3.6 Gingerbread back on. Naturally, I got a stock 4.0.3 file to flash (XXLPQ at first) and did so (well-versed with all of this). However, ever since that first flash, the phone's been stuck in a bootloop, usually at the "Installing applications" screen, but sometimes just a normal bootloop at splash. I've re-flashed with different stock ROMs, followed the soft-brick guide and flashed the bootloader and kernel, nothing's working. The first flash was clean, but after that I haven't been able to access recovery, only DL mode, so no way to wipe first.
Any thoughts?
Thanks
Change CSC it will wipe your data or XXLSJ with all components(PDA,PHONE,CSC)

[Q] Won't get past boot!

So I've been on CM9 since October, everything has been all well and good! Today I decided I wanted to flash a unbranded GS2 ICS ROM onto my phone so I could then update via KIES to the new JellyBean one. But now my phone will not go past the boot logo since I flashed I9100XWLPT via ODIN in the PDA section just as the guide told me. The boot logo moves but will not go past it. I have flashed a new kernel, I then tried Syiah Kernel. Now I've reflashed Cyanogen mod 9 via CWM and it is doing the same thing. The boot animation just moves forever. Can anyone help?
yes flash jb straight up.
Sent from the little guy
Wipe data/cache and dalvik-cache then re-flash a JB ROM (since you want to use Jelly bean) via Odin. You can get JB Roms from here
I've wiped all caches then flashed the JB SII ROM and still the same problem, it boots up to the samsung logo then just replays it over and over again without getting into the phone
And factory reset does nothing?
Flash this. See how you do.
PS: Flash only CODE, PHONE and CSC.

i9100T Stock ROM flash loop

Hello
I recently recieved my sisters old galaxy s2 after it had been water damaged and the only problem was the power button not functioning.
I wanted to flash a stock 4.1.2 rom via odin and since this was my first time flashing an S2 I followed a tutorial showing me how to flash a stock rom.
Everything went well during the flash but after it completed it bootlooped forever and ever. I tried flashing the same ROM again and the same bootloop. I also tried other ROMs and nothing worked. People have fixed their odin bootloops by entering recovery and wiping everything but I just don't know how to enter recovery without a power button.
Any suggestions?

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