Unable to flash CWM topic

Hello! I've been trying to flash CWM on my LG Optimus 3D, but, unfortunately, I was unable to. I am currently on a stock ROM (or should I say..stuck ROM)
My device is rooted, USB Debugging is enabled, I tried with ROM Manager and Recovery Flash (both from the Market) as well as two PC application. Here is what I get from the CWM Recovert touch installer:

Code:

---


        #######################################
        #                                    #
        #    With this tool you flash the    #
        # ClockWorkMod-Recovery-Touch 5.8.1.5 #
        #    at your LG-P920 Optimus 3D      #
        #                                    #
        #                        by paki0402  #
        #######################################


      ==== You do this on your own risk!! ====

            You want to flash the recovery
          and you agree the disclaimer then
          choose "Y" to start or "N" to exit!
      ========================================


Choose Y or N [Y,N]?Y


 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 ###      Start Installation      ###


 ------------------
  Start ADB-Server
 ------------------

* daemon not running. starting it now *
* daemon started successfully *


 ----------------
    Copy Files
 ----------------



 ----------------------------
  Install CWM-Recovery-Touch
 ----------------------------

/sdcard/mmcblk0p6.backup: cannot open for write: Read-only file system
/sdcard/recovery.img: cannot open for read: No such file or directory
/sdcard/recovery.img: cannot open for read: No such file or directory


 ----------------------
  Remove Temp-Files
 ----------------------

rm failed for /sdcard/recovery.img, Permission denied


 ---------------------
    Reboot Device
 ---------------------



 ###  Installation finished!  ###
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


Press any key to continue . . .

---

After so many tries, I went in to ROM Manager (where it tells me there is no available version for my P920 and specified as manually installed 3x+. Now my phone won't start. I press the power button, the LG logo appears for half a second, then it shuts down. Guess I'll have to reflash it with the LG Recovery tool...
Thank you in advance!