[Q] <Optimus Black KU5900 CWM Recovery Problem>

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http://forum.xda-developers.com – Hello!! I've recently updated my phone to Official ICS (Korean Ver.) V30I and I had problems installing the recovery. I could root my phone, its just that I can't install the recovery. I know there are already modified ICS Korean Ver. for p970 but there are still a lot of bugs and battery life is kind a shorter than the official ics. First, I've used rom manager to install but after boot, ""security error"" came up at boot and cannot even start. Second, I've also tried using other methods such as programs made by OB devs but still the same problem. So I would lik (HowTos)