Recent content by lukesau

  1. lukesau

    Hardware Basic Repair Guide of Current EZ-FLASH Products

    I recovered from the "black bar instead of Nintendo" failure on EZ Flash Jr. by desoldering and reprogramming the U2 SPI flash chip. The silkscreen says 25Q40H, but the JEDEC ID reads as an EON EN25F40, so you have to select EN25F40 in the programmer or the ID check fails. The flash holds two...
  2. lukesau

    How does EZ Flash Junior work?

    A few things I can add from poking at the firmware and doing some hardware tests. The thread's right that the game runs from U9's pSRAM, and I can confirm it's volatile: after loading a game, a quick power cycle reads the ROM back intact, but leave it unpowered a bit longer and the bytes fade...
  3. lukesau

    Hello

    I joined to share my work on a custom EZ Flash Jr. kernel
  4. lukesau

    Hacking Hardware GBA Project Custom EZ Flash Jr. Kernel

    I have been working on a modified version of the EZ Flash Jr. kernel (ezgb.dat or kernel.gb) for the past few months and I finally have the features I was looking to add: Continuous scrolling via the down arrow past the stock 16 file limit (including snappier redraw of file manager from the...
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