Default [Q] not booting

Hi all
Good day!

I have galaxy tab p1000 running on android 2.2. I tried to update it to 4.0 ICS. For this, I successfully routed as per given in this link (http://forum.xda-developers.com/show....php?t=2430190). Then I downloaded Odin and recovery image and ran it connecting my tab (connected by vol- and power button, loading pda and ran it). Now, it is stucking at samsung logo and restarting continuously. Please suggest me some tips. Is there any method, I should do extra, as I'm in 2.2 froyo? Waiting for your reply.