Source: MiniDisc Wiki contributors · September 3, 2026 snapshot · CC BY 4.0, except where otherwise credited.
Attribution and changes
Adapted from “CXD2681”. Links, layout and file names normalized; missing database fields restored; remote embeds replaced with links. Manufacturer manuals and separately credited photographs retain their original attribution.
A Sony ATRAC3Plus (Hi-MD) IC, with multiple revisions. All models have 1MiB of Flash, 64k of SRAM, 16MiB of DRAM, and ARM7TDMI+ CPU cores.
| Page | Device type | Release date |
|---|---|---|
| Sony MZ-NH600 / MZ-NH600D / MD-HUSB | portable | 2004/04 |
| Sony MZ-NH700 / MZ-NHF800 | portable | 2004/04 |
| Sony MZ-NH900 | portable | 2004/04 |
| Sony MZ-EH1 | portable | 2004/07 |
| Sony MZ-NH1 | portable | 2004/07 |
| Sony MZ-RH10 / MZ-M100 | portable | 2005/04 |
| Sony MZ-RH910 / MZ-M10 | portable | 2005/04 |
| Sony MZ-RH710 / MZ-DH710 | portable | 2005/04 |
| Sony MZ-EH50 | portable | 2005/11 |
| Sony MZ-EH70 | portable | 2005/11 |
For ease of use, we will format them into 2 groups: Pre-RH and RH. This simply splits them into the following models:
Pre-RH
CXD2681-221GG
CXD2681-222GG
CXD2681-223GG
RH
Firmware (Both)
Thanks Sir68k and Asivery for uploading firmware dumps!
Note: Not all models are dumped as of now, if you have a model that has not yet had it's firmware dump posted, please get in contact with either of them via Discord to discuss dumping it's firmware for preservation.