So, remember the firmware.nds file floating around? It's great for running the DS system menu on the DSi, however it is based on an old DS phat firmware (v3). I took the file and modified it to use the DS lite firmware (v5), so screen brightness should work.
Now, I know posting the file is illegal, so I'm just posting a patch so if you already have the old firmware.nds, you can use bspatch to update:...
firmware.nds for DS Lite patch
Now, I know posting the file is illegal, so I'm just posting a patch so if you already have the old firmware.nds, you can use bspatch to update:...
firmware.nds for DS Lite patch