Joined in 2023 
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Keeping your expectations to the 8 bit and 16 bit generations on the SF2000 will leave you surprisingly satisfied on an ultra budget device. Conclusions The game console that actually plays quite well and looks the absolute best on the Data Frog is the Sega Genesis. It was easily the best experience on this device. The last four bytes are a little-endian Uint32 storing the offset within the file of where the thumbnail metadata starts (i.e., the offset of the first byte of width data)
Data Frog SF2000 Button Mapping Tool (by vonmillhausen; credits also to nikita.burnashev) : https://vonmillhausen.github.io/sf2000/tools/buttonMappingChanger.htm So, for example: if your most recently played game (first in the history list) was "Batman - The Video Game" for Game Boy, and that game happened to be the ninth game listed in the Game Boy section on your device, the fifth and sixth bytes in your History.bin would be 0x04 0x00 (which is 4 in decimal, i.e. the "Game Boy" ROM list), and the seventh and eighth bytes would be 0x08 0x00 (which is 8 in decimal, i.e. the 9th game in the 0-based list of Game Boy games). The Favorites.bin file works exactly the same way, just with games you've favourited rather than played recently.Disable music from menus, and other cool utilities (from proszty) : https://tzubertowski.github.io/sf2000-utilities/
My biggest complaint about playing games on the Data Frog SF2000 is that every single game will be forced to fullscreen and have a bilinear filter applied. Designed with user convenience in mind, the SF2000 features an intuitive and user-friendly interface. Navigating through menus, adjusting settings, and launching games is a breeze, thanks to its responsive controls and intuitive layout. When the device is powered on, a "Welcome" image is displayed for a short time before the main menu appears. This image comes from inside bisrv.asd, (towards the end; exact offset varies between BIOS revisions). It's a 512x200 RGB565 Little Endian raw image file, and looks like this: Added a section about the default ROMs that come with the SF2000, including a HTML file and a CSV file that have the SHA256/SHA1/MD5/CRC32 hashes for all non-arcade ROMs, and details about which ROMs match the current No-Intro database. Powered by an SL4350 processor and 1GB of RAM, it effortlessly handles all those classic games you remember from consoles like the NES, Sega Genesis/Mega Drive, Super Nintendo, Game Boy, and much, much more. Providing quality performance.
Conclusions
The device advertises support for arcade, NES, SNES, Genesis/Mega Drive, Game Boy, Game Boy Color and Game Boy Advance; it also supports loading Master System ROMs. SNES and GBA performance are very hit-or miss (more miss than hit, really); the other consoles actually perform fairly well. All consoles currently stretch their output to fill the display, and do not maintain aspect ratio. Lynx (.lnx); Game Gear (.gg); Turbo Graphx (.pce); Atari 2600 (.bin); Wonderswan (.wsc). Zipped and unzipped arcade files such as Lady Bug and Joust did not play. The SF2000 suffers from the same graphic glitches of many budget devices. A phenomena called “screen tearing”, where the device has trouble processing the graphics fast enough for the screen to display them properly. Updated the custom firmware FAQ answer with the latest progress notes. Replaced the bootloader bug FAQ with a more generic FAQ covering the main situations under which the SF2000 fails to boot correctly. Added a brief note on the mysterious new 1.6 firmware that has started appearing on some newer devices. The next N bytes are the zlib-compressed thumbnail data (deflates to a raw RGB565 image, much like many of the other images used by the SF2000 UI)
adsnt.nec (SNES), fhcfg.nec (NES), htuiw.nec (Game Boy Advance), msdtc.nec (Arcade), setxa.nec (Genesis/Mega Drive), umboa.nec (Game Boy), wjere.nec (Game Boy Color) These numbers control the position and size of the game artwork in each system's game-list. The first two numbers are the X and Y coordinates from the top-left corner of the screen for where to start drawing the artwork; the second two numbers are the width and height of the artwork to draw. Note that the SF2000 doesn't do any image scaling; the dimensions are for the rectangular area the device will begin adding each pixel of the source artwork to. If the artwork's dimensions don't exactly match the dimensions specified here, the artwork will not display properly While we wait (forever?) for a possible CFW, this thread is going to collect information on known mods and repositories with useful mods/tools/info for the Data Frog SF2000. I do not claim to have produced any of this information or software/tools. All credit goes to the original authors and makers. If you think you deserve credit and I missed you, please let me know and I will edit this. If you would rather I remove your tool, or credit, or both, let me know and will also do this too. Instead of a .IMG file, this archive contains all files from the /bios and /Resources folders. Firmware Only
Updated the main menu BGM sample rate details with the latest findings from bnister. Clarified which menu text colour resets after exiting a game. Added a note about charging safety (thanks for your sacrifices, Zerter#4954! 🫡) You can potentially upgrade the firmware to the latest version (many of the other things below modify your installed firmware, so if you're going to do some of the others, do this one before them) built in games, in fact. Less than half of those are worth the space they occupy, and you’ll probably only ever want to play about 100 of those. SF2000: The name of the device; I don't believe it's actively used anywhere, please correct me if I'm wrong! Copy the UpdateFirmware folder to the root of the microSD card, so that the UpdateFirmware folder is in the same place as the bios and roms folders (i.e., you'll have an SD:/UpdateFirmware/Firmware.upk file)
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