Using this after ages and got some issues with some games that supposedly are supported...
First off, the Pokemon Black forwarder, no matter what I try, will always be blank, game works fine though, so just looks weird on the menu... After that, KH 358/2 Days blackscreens me after difficulty selection on all versions (EU or US), even with AP patch and multiple versions of the ROM tested, ALL of which work fine on no$gba. Finally, Ranger Guardian Signs just blackscreens for me as soon as I hit New Game, even though there's not supposed to be an AP patch needed and compatibility list says it works (although considerably outdated since it seems it was tested around version 18 of nds-bootstrap...
Final issue is that, unlike back in the day when I used this, when closing a game the system for whatever reason loads the chainloader apps from normal boots if you set them to auto, this is particularly annoying since I have Decrypt9 set to launch on auto if I don't load GM9 manually, so half the time it just loads D9.