If you are on Modaco R1 - his rom comes with recovery. Just go to recovery mode and select backup. Your Tab will be fully backup. Restore back from the same recovery
To change boot animation - you need to have a gif file and name it bootanimation.zip
Use Root Explorer : tap the RW box - browse to system/media
Paste the bootanimation.zip and replace the default file ( you can rename it just in case or keep a backup copy)
Right click the bootanimation.zip
Select permissions in the popup menu and set to
owner: read & write
group: read
other: read
Reboot Tab
The above is a rewrite based on the short and brief steps at XDA
http://forum.xda-developers.com/showthread.php?t=975832
Added on May 5, 2011, 9:53 pmIt is not even launch officially for sale anywhere in the world except the older thicker version 10.1v. Earliest is reported to be after June in Europe/USA
Added on May 5, 2011, 9:56 pmI am using same router as yours. It is auto detect , no need to input any special settings. Switch off router and try again. If still cannot, test your Tab at alternative wifi hotspots to confirm is not Tab hardware problem
Yea .. i did everything many times but still does not work, tab can detect my router but i cant connect, i did not adjust anything. I tried other hotspots wifi, it works fine.