It's unnecessary for those R4i-SDHC RTS cards which support N3DS V9.2.0-20J to work by updating the firmware. [2014-10-31]

R4i-SDHC RTS cards can support N3DS V6.3.0-12 perfectly(certain model only), please update your kernel to V1.80b. If your RTS cards cannot support firmware update for the moment, please be patient, the new patch will be released soon. [2014-06-24]

R4i-SDHC kernel updated to V1.80b on 2014-06-24
R4i-SDHC kernel updated to V1.12d on 2013-06-25

R4i V1.80b Update:
1. Fix some RTS games white screen issues.
2. Fix some RTS games hang issues.
3. Fix some RTS games problem.

4. Solved games:
XXXX - Gauntlet (US)
XXXX - Gauntlet (EU)
6290 - Transformers - Ultimate Autobots Edition (US)
6291 - Transformers - Ultimate Autobots Edition (EU)
XXXX - Akumajou Dracula: Gallery of Labyrinth(CN)
XXXX - Professor Layton en de Melodie van het Spook(CN)
XXXX - Kingdom Hearts(CN)
XXXX - Dementium2(CN)
XXXX - Tokumei Sentai Go-Busters (JP)
XXXX - Shin Megami Tensei: Devil Survivor 2 (EU)
5. Solved RTS games:
6368 - Beyblade - Metal Fusion (US)
6369 - Beyblade - Metal Fusion (US) (ToysRus Exclusive)
6370 - Beyblade - Metal Fusion(US) (Walmart Exclusive)
6371 - Beyblade - Metal Masters (US) (Best Buy Exclusive)
6372 - Beyblade - Metal Masters(US) (Collectors Edition)
6373 - Beyblade - Metal Masters (US) (Target Exclusive)
6374 - Beyblade - Metal Masters(US) (ToysRus Exclusive)
6384 - Lera Glaciale 4 - Continenti alla Deriva - Giochi Polari(IT)
XXXX - Apprends avec Pokemon: A la Conquete du Clavier ‍(FR)
XXXX - Suite Precure Melody Collection‍ (JP)
XXXX - Lernen mit Pokemon - Tasten-Abenteuer (GE)‍

Supports roms Multimedia files,or Homebrew games of any size from the Internet
Directly Drags and drops all files into the microSD(TF) card from Computer
Plugs and plays in SLOT-1 without any passcard and supports all DS versions.

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