It's little bit awful that I saw those threads about various kinds of R4s on GBAtemp. The impression brings me that game fans in the region out of China knows a little about the real status of flashcard. Please allow me to declare it, mainly on R4 (anyone wanna know other cards post to let know). You can deny but don't miss it. This thread is Something about the 2nd generation of R4 -- R4 SDHC, in official It was post on my blog.Any question and suggestion welcome. Section I -- What is SDHC? The table shows the development of SD memory card criterion. SD Card Association established new SD Memory Card Specifications 2.0 on May, 2006 since the urgent demand of video technology and real time R/W speed, which SDHC belongs to. The revolution upgrades the R/W speed as well as supports the larger capacity. It's a big contribution of R4 SDHC to support huge-sized DS game and multi-function software in the future. Criterion Version Class R/W Speed Max Capacity Support SD 1.1 Class 1 1M/s 4G SD 2.0 Class 2 2M/s 8G SD 2.0 Class 4 4M/s 16G SD 2.0 Class 6 6M/s 32G Section II -- New Function There're two new functions mentioned in the official guide: DLDI auto-patching and Full download play support. Section III -- Package & appearance There is no more different but a big 'new' brand on the right corner and white 'SDHC' printed after R4 logo. We can also see SDHC support description at the back cover. The inner side still sets the same style as R4 does, one card box and a USB2.0 card reader. Add SDHC logo at the front of the card. The card is re-designed without spring slot so players don't afraid that their card may get stuck. One more to mention, R4 SDHC has no shell to protect its gold fingers. And it can be inserted and pushed out of the DS with ease since it is thinner than other flashcards. It’s a little pity there is no change for the R4 SDHC interface except auto-changing skin by month. Also all cheat codes on R4 are compatible. Section IV -- The Kernel R4 SDHC kernel is incompatible with R4's (It's important since it distinguishes the real R4 and other forms of R4 flashcard), the latest version is 1.21, you can download it from the official site (http://www.r4sdhc.com/) and copy it to your card to replace the original one. Section V -- Games & software Report from some Chinese DS BBS shows that R4 SDHC can run most DS games and majority of software without accident. It also shows perfect representation to Emulators on DS. Software ImgView 1.1 -- Pass Comic Book DS 3.0 -- Pass M3Sakura -- Pass nesDS -- Pass snesDS -- Pass neoDS 0.2 -- Lag on Metal Slug Games Super Mario 64 DS -- Pass Summon Night 2 -- Pass Final Fantasy 12 -- Pass Castlevania ROP -- Pass Sigma Harmony -- Pass Band Brothers DX -- Pass Summary Since the multimedia player function is widely used with emphasis. R4 SDHC updates its CPU to supports 32G TF at max. More, it can be know from those fake R4 by the new design of PCB and kernel. Although it is no more than a new version of R4, still we can look ahead a bright future on this classic flashcard.