: Starting around MAME version 0.186 and solidified by 0.201, the emulator shifted to a high-level emulation (HLE) or low-level emulation (LLE) requirement that specifically looks for dl-1425.bin New File Structures
The progress bar appeared. It didn't move in percentages. It moved in memories. dl1425bin updated download
While specific steps may vary depending on the device or software you're updating, a general approach is as follows: : Starting around MAME version 0