S2 stuck on boot loop - only download mode accessible - Galaxy S II Q&A, Help & Troubleshooting

Hi all,
prior to post a question I've been reading some posts in the forum and made some tests.
My Galaxy S2 (model GT-I9100) seems to be stuck in a bootloop, I can only see the Samsung logo, and then the phone eventually reboots.
Luckly I can access to Download mode, as suggested in the forum I tried to flash a stock firmware on the phone (downloaded from sammbile). Odin is able to flash the firmware correctly, but this does not solve the problem, the phone is always stuck on boot.
notes:
- I've tries to flash different firmwares from version 2.3.6 to 4.1.1
- I've used the PDA option in ODIN (no re-partition).
- I cannott access to recovery mode, only Download mode.
- I've removed SD card
Any suggestion?
many thanks

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Try to flash JB leak via Odin (4.1.2). It's a 3-part firmware which will wipe as it flashes.
And yes, stay away from pit files/repartition.
Sent from a galaxy far, far away

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Filartrix said:
Hi all,
prior to post a question I've been reading some posts in the forum and made some tests.
My Galaxy S2 (model GT-I9100) seems to be stuck in a bootloop, I can only see the Samsung logo, and then the phone eventually reboots.
Luckly I can access to Download mode, as suggested in the forum I tried to flash a stock firmware on the phone (downloaded from sammbile). Odin is able to flash the firmware correctly, but this does not solve the problem, the phone is always stuck on boot.
notes:
- I've tries to flash different firmwares from version 2.3.6 to 4.1.1
- I've used the PDA option in ODIN (no re-partition).
- I cannott access to recovery mode, only Download mode.
- I've removed SD card
Any suggestion?
many thanks
Click to expand...
Click to collapse
1. Did you tried to flash a other kernel ? Like Dorimanx v8.34 ? flash via odin if that doesnt work ... you get rood and kernel at the same time, by my side, this kernel is good, the new kernel of dorimanx v9.xx is still in test and somehow someone told me its bugged.
if that doesnt work
1. Download Odin3 v3.04 [ Uploaded it for you ]
2. Click on Sammobile - Register yourself, dont worry its free, and download your firmware. [ You have to register yourself, before you can download anything. ]
3. Extract the .zip File you downloaded from sammobile, open Odin3 v3.04, connect your phone via USB and go to download mode [ Volume Down Key + Home Key + Power button ]
4. Put the File you extracted [ md5.tar ] on PDA and press Start

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StressSyndrom said:
1. Did you tried to flash a other kernel ? Like Dorimanx v8.34? flash via odin if that doesnt work ... you get rood and kernel at the same time, by my side, this kernel is good, the new kernel of dorimanx v9.xx is still in test and somehow someone told me its bugged.
if that doesnt work
1. Download Odin3 v3.04 [/URL] [ Uploaded it for you ]
2. Click on Sammobile - Register yourself, dont worry its free, and download your firmware. [ You have to register yourself, before you can download anything. ]
3. Extract the .zip File you downloaded from sammobile, open Odin3 v3.04, connect your phone via USB and go to download mode [ Volume Down Key + Home Key + Power button ]
4. Put the File you extracted [ md5.tar ] on PDA and press Start
Click to expand...
Click to collapse
Hi, Thanks fr the advice.
I tried to flask Jelly Bean leak firmware and official firmware (4.1.2) the problem remains.
I've also tried to flash Dorimax and Siyah Kernel, but this does not solve the issue, the phone remains in a boot loop.
The phone can still go in download mode, but i do not know what could I flash...
Please let me know if you have any other idea.
Thanks

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You need to phone to successfully take an Odin stock flash to fix it. Advanced search Hopper8's 'Odin won't work' thread. There's plenty of ideas in that thread you can try. You could also try flashing a 3 part stock rom, however there's a good chance this will wipe the phone.

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Flashing stock FW does not solve
Hi all, as I mentioned in my first post, I've already tried to flash stock firmware (trough Odin 3.04) downloaded from Sammobile. I've tried different versions of stock firmware, from 2.3.3 to 4.1.2, International version and Italian version. With all this stock firmware all I can see is this image:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
when I flash a custom Kernel, I obtain this Image:
in both cases the phone won't go further. It get stuck on that image end reboots after few seconds.
Bye

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And I suggest you keep trying. Unless you'd prefer to take it to a service centre & pay for it to be repaired (because you flashed custom kernels to the device to try & fix it) ? Up to you.
What I do know is there aren't any 'magic fixes' here. You know the only way it will be fixed, you can either keep trying that, or not.