I have gotten the R4 (SDHC) v1.21 worked on my original supposely obsoleted R4 ! The lastest update for R4(SDHC) was on 7 Aug 08. The process similar to getting the YSmenu/TT worked on the R4. First, rename the downloaded _DS_MENU.DAT (3695K) to _DS_MENU.NDS Make the gui.bat, similar to the thread on converting the YSMenu, but replace the YSMenu file in the txt to _DS_MENU.NDS r4crypt.exe the _DS_MENU.NDS to _DS_MENU.DAT Put all the other files from v1.21 (except the original _DS_MENU.DAT) together with this new _DS_MENU.DAT in the root. Tested with Hoshigami, Hulk (arm7 patched earlier for v1.18), Adv war dual ruin, Kungfu Panda, animal crossing, FF Tactics, FFIV ...... etc It worked ! Edit --> Note :- Do not use or press "start" to return to the previous/main menu or you will get a message " This card is fake ! ". Instead, press the "A" button on the directory/folder to get back to the previous menu. Edit --> Brightness control ok, LRXYAB reset within games ok, moonshl ok. Except using the "start" button in the directory menu to go back to the main menu. Tested on both my old original R4, the first white casing version ( with spring loaded ) and the second black casing version (without spring loaded), both worked ! Edit ---> Hulk without arm7 patched still failed. I tried both v1.21, as well as v1.20 that supposely corrected the compatibility problem. Only Hulk failed.