SP-404MK2 DOOM OS Patcher
Patches the official Roland SP-404MK2 firmware with DOOM OS right here in your browser.
DOOM OS is free. If you enjoy using it, you can support its development through Patreon, PayPal or buy me a coffee.
- Version
- Build
- Firmware
- Released
Get the firmware from Roland
Download the system update from Roland's support page and unzip it. You need the SP404MKII_APP1.bin file inside; the other file, SP404MKII_APP0.bin, is not needed.
https://www.roland.com/global/support/by_product/sp-404mk2/updates_drivers/Open ↗Compatible with firmware .
Load the file and patch it
Drop the file on the panel below, or click it to choose. The file is checked first, then patched in memory.
DOOM OS is free. If it’s useful to you, you can support its development on Patreon, PayPal or buy me a coffee.
Install it on the SP-404MK2
- Copy the patched SP404MKII_APP1.bin to the root of the SD card.
- Put the card in the SP, hold SHIFT and switch it on. Wait for the updater menu and press the VALUE knob.
- When the update is done, switch the SP off and on again.
How to use DOOM OS
If everything went well, you'll be greeted with a fancy DOOM OS boot animation!
In the same settings, the Version tab shows the installed version.
Open DOOM OS with the key combo REMAIN + SUB PAD.
For all features and key combos, read the manual.
Have fun!
What if something goes wrong?
Download the official firmware from Roland again and install it the usual way. This will restore the stock firmware.
https://www.roland.com/global/support/by_product/sp-404mk2/updates_drivers/Open ↗Disclaimer
DOOM OS is unofficial firmware and is not developed, tested, or supported by Roland.
DOOM OS is provided as-is, without warranty or liability for damage or data loss. Installing modified firmware carries inherent risks and may affect your warranty. Please back up your projects and samples before installing.
This project is not affiliated with, endorsed by or supported by Roland Corporation. SP-404MK2 is a trademark of Roland Corporation.