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Sp-808-rosetta-looper-OS-, image 1 from its README
Firmware

Sp-808-rosetta-looper-OS-

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Custom firmware turning the Roland SP-808 Groove Sampler into a guitar looper / MPC-style sampler. Reverse-engineered H8S OS, homemade H8S assembler/disassembler tools, and disk-flashable builds that

Sp-808-rosetta-looper-OS- is custom firmware for the Roland SP-808, by @yuyoi. Open source under MIT, latest release v1.99 (October 2026).

forRoland SP-808·by@yuyoi

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Download v1.99

RosettaPatcher.exe· 29 MB

MIT· yuyoi/Sp-808-rosetta-looper-OS-·downloads come from the creator’s GitHub releases

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markdown · @mention · ⌘↵

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