[Q] Noob Question, Lost root access after switching ROMS - Galaxy S II Q&A, Help & Troubleshooting

Hi Everyone,
Glad to be a part of xda..I need your advise on a possible screw-up that I did out of curiosity
I have a Galaxy S2 i9100. I had flashed CM7 on it successfully, with proper root access and everything else in order. Cm7 did not appeal to my tastes, so I decided to switch from it to VillianROM.
To flash VillianROM, I downloaded its zip file from official source and used clockwork mod recovery mode to flash it over cm7 after deleting dalvik cache and user data..
Now, I have installed VillianROM with partial success since I have lost root access to my phone.
I tried to regain root access by being a smarta** by flashing Siyah Kernelv2.6.1. Even after installing it, I dont have root access. -.-
Here are the details of my phone:
Model Number: GT-I9100
Android Version: 2.3.5
Baseband Version: I9100UHKI1
Kernel Version: [email protected]#42
Build Number: VillianROM 3.0
Can anyone please help me understand what mistake I did and how to remedy it?
Also- I plan to flash MIUI ROM now and settle with it. Any help with that with be appreciated )

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Sargoon said:
Hi Everyone,
Glad to be a part of xda..I need your advise on a possible screw-up that I did out of curiosity
I have a Galaxy S2 i9100. I had flashed CM7 on it successfully, with proper root access and everything else in order. Cm7 did not appeal to my tastes, so I decided to switch from it to VillianROM.
To flash VillianROM, I downloaded its zip file from official source and used clockwork mod recovery mode to flash it over cm7 after deleting dalvik cache and user data..
Now, I have installed VillianROM with partial success since I have lost root access to my phone.
I tried to regain root access by being a smarta** by flashing Siyah Kernelv2.6.1. Even after installing it, I dont have root access. -.-
Here are the details of my phone:
Model Number: GT-I9100
Android Version: 2.3.5
Baseband Version: I9100UHKI1
Kernel Version: [email protected]#42
Build Number: VillianROM 3.0
Can anyone please help me understand what mistake I did and how to remedy it?
Also- I plan to flash MIUI ROM now and settle with it. Any help with that with be appreciated )
Click to expand...
Click to collapse
How did you know that you dont have root access???Install superuser and busybox first(restart).Download and install terminal emulator.Open it up.
Type the following
su
busybox whoami
If it says
whoami: inknown uid 0
sometimes,it says just root
Then you have root access !!

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LOL!
Did you just installed a ROM over another totally different one without deleting it first? xD
If you switch ROMs, you should format /cache /data /system and Dalvik if you want to work correctly. In this case you installed VillainROM over CM7 files so the files in common are overwritten but CM7 specific files are still there and might corrupt the other ROM.
If you still have access to CWM, you can format the above partitions and reinstall VillainROM.
If you don't have access to CWM, I would suggest flashing a Stock and start it over from root.

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chetan_mohanty said:
How did you know that you dont have root access???Install superuser and busybox first(restart).Download and install terminal emulator.Open it up.
Type the following
su
busybox whoami
If it says
whoami: inknown uid 0
sometimes,it says just root
Then you have root access !!
Click to expand...
Click to collapse
I used Root Checker Basic from the market to confirm that I dont have root access on my phone..

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AzureusPT said:
LOL!
Did you just installed a ROM over another totally different one without deleting it first? xD
If you switch ROMs, you should format /cache /data /system and Dalvik if you want to work correctly. In this case you installed VillainROM over CM7 files so the files in common are overwritten but CM7 specific files are still there and might corrupt the other ROM.
If you still have access to CWM, you can format the above partitions and reinstall VillainROM.
If you don't have access to CWM, I would suggest flashing a Stock and start it over from root.
Click to expand...
Click to collapse
Since I cannot use CWM..I want to flash a stock rom and restart the whole rooting process to get MIUI ROM on my phone..
Can you please point me to a guide or explain me how to do so?

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First of all in VR thread it states:
IF YOU THINK THE ROM ISN'T ROOTED, INSTALL SUPERUSER FROM THE MARKET. IF YOU WANT CWM APP, GET IT FROM THE ATTACHMENTS LIST
Click to expand...
Click to collapse
Then in SiyahKernel v2.6 thread it states:
TO FLASH ZIP:
Use CWM Recovery and install zip file. Wiping cache&dalvik cache is recommended for those who use BLN.
if you lose root after flashing the kernel (unlikely), flash http://goo-inside.me/superuser/su-2....fgh-signed.zip in CWM.
Click to expand...
Click to collapse
With them 2 parts of info "first should do it" you'll have ROOT very easily please read the posts from developers!

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Thanks everyone for your help
Thanks for your help everyone..I have now successfully flashed 2.3.6 on my s2 from Sammobile having kernel kk5
Then rooted using CFRoot Method and Odin.
Almost done finalising MIUI ROM..
I now have a clearer understanding of android roms