[Q] HELP! Rooted phone stuck in Samsung Galaxy SII screen. - Galaxy S II Q&A, Help & Troubleshooting

Hello,
Please help!... I am unable to use my phone after doing something that maybe I shouldn't have done!!
First let me go through some steps that led to the phone becoming unusable.
1) First I successfully rooted the phone (using instructions off the net)
2) I tested the rooting by clicking on the SuperSU App and granting the necessary permissions.
3) Next I downloaded the Titanium Backup and successfully backed up my phone
4) Then I decided to go back into the SuperSU (just to see what kind of things I could do with the superuserApp)... and a POP-UP Window appeared. Now I really can't remember the exact message but it basically was asking me if I wanted to perform some sort of conversion. Without giving it too much thought and like an idiot I just clicked on YES. The phone then rebooted and remained STUCK on the screen where the "Samsung Galaxy SII GT-I9100" message flashes up with a yellow triangle exclamation mark below (please see attached pic). It doesn't matter how long I wait or how many times I reboot the phone remains stuck on this screen.
Please note the following:
-- If I press (Volume Up + Home button + Power button) simultaneously the same screen appears (ie the Samsung Galaxy message) however long I keep the buttons pressed.
-- If I press (Volume Down + Home button + Power button) I get something different happening ie A warning message about custom OS (see attached pic) and when I press the Volume Up button to continue I get the screen with the Android symbol and the word downloading below it with some ODIN Mode information at the top of the screen (see attached pic).
I'm praying AND got my fingers arms & legs crossed that I haven't "bricked" the phone!!
Please please help!... I would really appreciate your assistance in getting my phone working again (if it's at all possible now).
Oh and apologies if I have posted in the wrong area.
Many thanks in advance.
Kieron

---

@Kieron139 as far as I know you have done something to your system which doesnt allows it to fully boot aka soft brick. The yellow triangle is just an download counter a bit. But you can reset that but I only did that when I sold it, triangle is cool.
What you can try is to download Odin on pc, follow odin guide in general I believe for the s2 and flash back to stock.
Tip: dont turn off your phone if download mode failed, just reconnect the cable.

---

@wulsic ... many thanks for the quick reply!
I have the ODIN program, I used it (with the appropriate jar file) when I rooted the phone. However I'm not sure how to flash is back to stock using the odin program, also I'm new to this site so can you tell me where I can find the odin guide explaining how to do this... or if there is a "how to"thread explaining step by step how to flash back to stock?
Kieron

---

@wulsic... I managed to find step by step instructions to flash back to stock, however as well as the ODIN program it says I need to have a copy of my stock ROM.... but where do I get this from?

---

@Kieron139 it tooksome timemy tablet hanged but here is a guide,
http://forums.androidcentral.com/sa...e-guide-using-odin-de-bloat-root-recover.html
You only need to find the galaxy s2 stock rom from internet and download it, the flash it in pda and see the guide for more details. Make sure you have the s2 firmware not aother one.
Edit: :/ that post timing. But I will find a link for you now.
@Kieron139 here find the s2 firmware from sammobile.com and samsung-updates.com

---

@wulsic ... that's super! will access the links, download the ROM and let you know how I get on!... but it may take me a little longer than it should as I'm going to take my time and follow the instructions carefully so I don't muck it up lol

---

@Kieron139 No problem, take the time. Better to do it slowly then bricking your phone. I will respond as fast as I can when you have a question but I can't answer directly maybe when your rom download is done. Goodluck! :good:

---

@wulsic ... I think I still need your help with identifying the correct stock ROM file. The two links you gave, I couldn't work out how to search for the file in the first one but in the second one when I searched using my model (ie GT-i9100) I got a list of downloads to choose from for different regions. Now I'm based in London UK and the phone is unlocked but was with the Three.co.uk network provider (I'm not sure if this information is relevant but I thought I'd mention it just in case). Anyway I've attached a screen shot of a part of the list that comes up but its not the compete list.
Please note I found another link describing how to flash back to stock and it mentions I need a file called "I9100XWLSW_I9100XXMS2_I9100XEULS5_HOME.tar.md5".
Anyway could you please help me with choosing which firmware file I need to download?
Thanks

---

@wulsic Ooops forgot to attach the screenshot in prev reply

---

@Kieron139 in the first one you had to go to firnware, scroll down then enter device.
You dont need the exact android stock version from xwlsw just find a stock one from the 2 sites I provided and then download and flash it. I am trying to find and copy one for you but my tablet keyboard doesnt show up always, lowramdevice.
I see you tagged me again before I could finis typing my message xd.
I suggest to use xwms3 since its the latest stock version and should also work fine with your phone in UK.

---

Kieron139 said:
@wulsic Ooops forgot to attach the screenshot in prev reply
Click to expand...
Click to collapse
Any of the firmwares on the above screenshot should be fine as they all are genuine samsung stock roms for i9100
Download one of them and follow the guide which wulsic posted and you will be fine :good:

---

@wulsic ...ok will do, and sorry for being a pain! just want to make sure I don't go installing the wrong one

---

@-shaMe- Thanks

---

@wulsic Great news!... phones working again! :victory: :good::good::good:
Thank you so much for you help and for your patience!
I now have a working phone again
Best regards
Kieron

---

@Kieron139 Nice now if you have that problem again you know now how to fix it.
Also an tip for if you start flashing custom roms like cyanogenmod, recovery and kernel are builtin one boot.img so if you flash an recovery for stock but you have cyanogenmod then the rom will not boot anymore. (Cyanogenmod and other custom roms have recovery also builtin their rom.)
If your boot.img is corrupted and recovery/rom doesnt boot anymore then I suggest to flash an recovery with odin instead of reflashing the whole stockrom.

---

@wulsic ... Thanks for the tip!
Btw I'm still a bit new to this site but how do I "thank" someone for their help?... some sites have a button next to the replies which you can click to say if the reply was helpful, couldn't see anything like that here?
A couple of other quick questions. I'm very happy with my Samsung Galaxy SII but it is frustrating that it no longer receives any software upgrades/improvements. So which custom rom would you recommend? ie is cyanogenmod the best one?... also once a custom rom is installed can the phone still be rooted?
Cheers
K

---

@wulsic Ignore the "how to thank someone" question in my last message... I wasn't logged in so couldn't see the thanks button!! lol

---

@wulsic
There's a bunch of custom ROMS mentioned in the link below which will update my phone to android 4.4.4. What do you think of the ROMs and which would you recommend?
K

---

@wulsic
Ooops forgot to include the link! lol
Here it is... http://galaxys2root.com/category/galaxy-s2-roms/
Cheers