NDS R4 - White Screen when loading games

It's not weird, the same applies to most other flash cartridges too. E.g. the R4 requires a 3rd party kernel/firmware to resolve the piracy protection issue you experienced, if they don't want to rely on patching roms all the time. Not all roms have piracy protection, while there's also the likelihood of you've been downloading roms that was supported by your g6 card.

There are no other solution to make it run on your g6 if there's no patch from DS-Scene Rom Tool, since your card is not supported by any 3rd party kernel/firmware, and the patching tool itself has also been abandoned. NDS in general been abandoned for several years by now. Even your g6 been abandoned for years.

 

*problem solved* - locked.