@tntexplosivesltd

tntexplosivesltd

@tntexplosivesltdAuckland, New ZealandJoined July 2026

Reverse Engineering Audio Hardware for Musicians & Engineers

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GP-200 Reverse Engineeringgp200-reversing.hashnode.dev7 posts

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Ttntexplosivesltdgp200-reversing.hashnode.devAug 14 · 15 min read

The DSP Load Sweep, and the NAM A2 Question

If you've spent any time in the GP-200 threads on Reddit or Facebook, you've probably seen this claim: NAM Architecture 2 Lite is designed to run in real time on a $3 ARM Cortex-M7 chip. The GP-200's

Ttntexplosivesltdgp200-reversing.hashnode.devAug 11 · 13 min read

The Front Panel, and a Tuner That Actually Locks

Post 5 ended with a working pipeline and two small victories: a version string changed on a real device, then a copyright line changed on a real device. Both flashed over MIDI, both booted fine afterw

Ttntexplosivesltdgp200-reversing.hashnode.devAug 3 · 10 min read

Building 'gp200fw' - Design, Build, and a Firmware Patch That Boots

Post 4 ended with the protocol fully understood and the check byte solved, but nothing actually sent to the device: This post details designing a tool, building it module by module, and testing it on

Ttntexplosivesltdgp200-reversing.hashnode.devJul 31 · 11 min read

Decoding the Updater, and the Byte That Fought Back

Post 3 ended on a specific kind of anticlimax: the fuse says there's no lock on this device, and it turns out someone already walked through the open door. lshug's GP-200 English patch proves it: a mo

Ttntexplosivesltdgp200-reversing.hashnode.devJul 27 · 10 min read

Flash Dump & Secure-Boot State

Post 2 ended with the debug port confirmed live: the Debug Port answered, the core enumerated, and a single test read came back byte-for-byte correct. That proved memory on the GP-200 is readable. It

tntexplosivesltd

About

Available for

tntexplosivesltd's blogs

Recently published

The DSP Load Sweep, and the NAM A2 Question

The Front Panel, and a Tuner That Actually Locks

Building 'gp200fw' - Design, Build, and a Firmware Patch That Boots

Decoding the Updater, and the Byte That Fought Back

Flash Dump & Secure-Boot State

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tntexplosivesltd

About

Available for

tntexplosivesltd's blogs

Recently published

The DSP Load Sweep, and the NAM A2 Question

The Front Panel, and a Tuner That Actually Locks

Building 'gp200fw' - Design, Build, and a Firmware Patch That Boots

Decoding the Updater, and the Byte That Fought Back

Flash Dump & Secure-Boot State