Here you go.
How to download:
google clockworkmod recovery gt-p5100 download
click the one which says galaxytabhacks
Scroll down and klick gt-p5100 one
I've downloaded this from here and works perfect.
[ PREREQUISITE ]
Please have at least 50% battery
Make sure your laptop is charged (if you have a desktop, skip that.)
Boot into download mode (volume up + power.)
At the warning press volume down
Connect usb cable to computer
Wait until the ID(COM0) thing turns yellow
Select that tar thing as PDA
Check PDA tickmark