Unhappy [Q] Device Boot Looped! Now how to push a library file back to the directory?

I replaced two of my library file by following a tutorial. But it wasn't for my device. Now my device is in Boot Loop . please tell me how to push those two file back to the directory. I have both of them in my sdcard. I don't have my ROM backup, no recovery app is installed & the device is rooted. I am willing to follow any process you gave. so please suggest me in little bit detail. Thanks a lot.

Decice Samsung Galaxy Tab: GT-P1000
GB 2.3.3