well as regard to r4 pro gold firmware
download fwupdate_for_WOOD_R4dsi here is the link
http://www.r4ill-net.com/r4-pro_downloads/...D_R4dsi1.21.rar
extract the files and copy to your memory card
load flashcart into slot 1 and turn on ds
in your ds lite go to the file fw_update.nds and press...