[Solved] Unable to install any custom ROM - AT&T Samsung Galaxy S II SGH-I777

Hi there Guys, i recently upgraded from my old galaxy to the new Galaxy S2. I've got CWM (something called Android System Recovery 3e), and its also rooted.
However, I am not able to flash any custom rom... I tried several ROMs, but none works. The error code i get is:
E:signature verification failed
install_package = (2)
Installation aborted
Click to expand...
Click to collapse
Also, while getting into the Recovery thing, i noticed in one of the line, it shows:
Can't access to '/system/csc/ATT/system/'
Click to expand...
Click to collapse
I am not sure if thts something to look into.
I did a search through all the forums... but was not able to find any solution. I tried going back to stock rom and then trying it again.. however, it still not worked. Getting the same error msg.
Can anyone help me out....???
I am too desperate to move to a custom ROM.
Rite now I am at:
Android 2.3.4
Baseband: I777UCKH7
Kernel: 2.6.35.7

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I suggest you go and read the sticky at the top of this board titled
ATTENTION: AT&T Samsung Galaxy S II General Guide/Walkthrough/FAQ/hints and tips
and the links posted therein thoroughly then if your still having problems come back

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I've done everything... I've gone through the stickies.
I tried getting back to stock rom, rooting it again, not using the ROM Manager, everything.
But everytime i get the same error.

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next2devil said:
I've done everything... I've gone through the stickies.
I tried getting back to stock rom, rooting it again, not using the ROM Manager, everything.
But everytime i get the same error.
Click to expand...
Click to collapse
It is not enough to just have root. Have you installed a "customize kernel with CWM?" It is step 3 (a, b, or c):
http://forum.xda-developers.com/showthread.php?t=1311081
If so, which kernel did you flash. 3a worked will for me using Entropy's DD:
http://forum.xda-developers.com/showthread.php?t=1289460
If using Mobile odin, just download the .tar option from Entropy's thread. Once that kernel is installed, then you can flash pretty much whatever you want.

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christ, another one?

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next2devil said:
I've got CWM (something called Android System Recovery 3e)
Click to expand...
Click to collapse
Be aware that Recovery 3e is NOT CWM, but rather it is the stock recovery tool that the phone ships with. You first need to flash a kernel that says "CWM" in the title. I recommend Entropy's Daily Drivers (link 2 posts above) to start with, since they are very stable, and you can at that point flash other kernels or ROMS.

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you need to read, read and re-read before you break your phone
Sent from my SGH-I777 using xda premium

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Thanks to everyone!!!
I've solved my issue. All I had to do was toggle the signature verification option. I disabled it and tried installing... and it worked fine.
Really really thanks for bearing one more newbie