I just got a Dsi LL (Japanese version) and updated to 1.4.5J and bought a R4 SDHC Rts lite (2019) with it. But the problems just begin to start. I go to the website r4isdhc. com for fw and get the newest one. But the games seem not too happy about it and I got white screen on my Dsi (rune factory 3, FF XII, Dragon quest IX...). Then i get some research and tried to boot YSmenu.nds from the original fw. It works great on rune factory 3 but the others still get white screen along with Pokemon black 2( which is working fine with the stock fw). Then I tried to use YSmenu as my primary fw, but nothing better. I thought it would be the cart, but it works flawlessly on another Dsi XL( not LL) and another 3DS xl. I'm hopeless. Can anyone help me, please? Thank you.