How to change skin on R4 3DS card?

R4 Skin change method, R4 theme DIY on R4 3DS (r4i-sdhc.com)

Download the R4 Skin patch to computer, unzip the patch, and copy the ”R4_Skin” to directory of “TF/R4iMenu/Skin”. Turn on 3DS console, enter the “R4 mainmenu – config”, choose your favourate skin, and press “A” key to confirm.  then the R4 theme changed.
Youtube watch R4i SDHC Skin Change Video !
There are 4 files in the R4 Skin directory, each has different functions, can’t be changed:
TScreen.bmp — R4 NDSI Top screen interface after starting the machine
BottomInit.bmp — R4 NDSI Bottom screen interface after starting the machine
TScreen.bmp — R4 NDSI Top screen interface for the file category
BottomScreen.bmp — R4 NDSI Bottom screen interface for the file category.