WARNING: Don't use any image created or edited by Linux image editor (i.e. Gimp, Gwenview, Krita), you'll got a black screen of death! A simple, powerfull, nice, and free Paint.NET - but Windows - image editor worked!
A pdn file (Paint.NET multi layer image) attached here as a template for your convenience.
BACKUP: If something goes wrong, flash param-samsung-t311.tar.md5 using Odin as PDA or Heimdall v1.4.0: "sudo heimdall flash --PARAM param.bin".
Some technical explanations:
There is a script inside my CWM flashable zip. This script will flash a logo.jpg overwrite the original one. I called this in-place flashing because only logo.jpg is replaced, the other files in the param partition untouched. Attached boot logo CWM flashable zip should be compatible for all T31x family but I only test it on T311.
#!/sbin/busybox sh # Galaxy Tab 3 8.0 boot logo changer script # Ketut P. Kumajaya, Nov 2013 # Extract device param.bin dd if=/dev/block/platform/dw_mmc/by-name/PARAM of=/tmp/param.bin bs=4096 mkdir /tmp/param cd /tmp/param tar xf /tmp/param.bin # Replace logo.jpg, repack param.bin cp -f /tmp/logo.jpg /tmp/param/logo.jpg rm -f /tmp/param.bin tar cf - `ls | sort -t.` > /tmp/param.bin dd if=/tmp/param.bin of=/dev/block/platform/dw_mmc/by-name/PARAM bs=4096 cd /tmp rm -rf /tmp/param rm -f /tmp/param.bin
Flash attached CWM flashable boot logo at your own risk! I only test it using PhilZ Touch recovery. Please reboot into recovery before performing a normal reboot!
Images courtesy of http://www.imagesweb.org/ and http://www.wallpaperscraft.com/ .