## What's Changed
- reduce high bank memory pressure by @schollz in https://github.com/schollz/_core/pull/829
- remove the unused SaveFile sequencer reservation in ezeptocore/ectocore
- share realtime-stretch scratch buffers to reduce heap usage
- move the audio render workspace off the core-1 stack
- set a 4 KiB core-1 stack for every firmware build profile
- retain the original Freeverb algorithm with one comb and one allpass
- reserve sufficient heap so reverb allocation cannot starve playback
- replace hot-path sprintf calls with lightweight integer formatters
- remove printf, SysEx formatting, and deferred diagnostics from hot paths
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### What's new
- zeptocore: Added realtime stretch control for zeptocore playback. Hold B and turn Knob Z to move from bypass into increasing stretch amounts.
- zeptocore: Added a Retrigger volume ramps toggle using buttons 13 + 14 + 15 + 16. It is enabled by default and lets retriggers ramp volume back in instead of always staying flat.
- EZEPTOCORE/ectocore: Added realtime stretch behavior random-effect/rune workflows when the selected rune is timestretch-only.
### What's changed
- Updated MIDI CC 20 to control realtime stretch instead of bass volume.
- Updated Zeptocore filter handling so the filter control behaves as a low-pass cutoff when the DJ filter mode is disabled.
- Clarified the quickstart and combo docs for volume, tempo, sample selection, random jump, random effects, random tunnel, quantize, and realtime stretch controls.
## What's Changed
* fix: triggering first when restarting from clock by @schollz in https://github.com/schollz/_core/pull/823
* chore: bump version by @schollz in https://github.com/schollz/_core/pull/824
Full Changelog: https://github.com/schollz/_core/compare/v7.1.7...v7.1.8
## What's Changed
* Add Discord and Manual links to website sticky menu
* [WIP] Improve speed to enter red mode
* chore: bump version
**Full Changelog**: https://github.com/schollz/_core/compare/v7.1.1...v7.1.2
What is the latest firmware for the Infinite Digits EZEPTOCORE?
The latest firmware for the Infinite Digits EZEPTOCORE is version 7.3.1, released on 2 Aug 2026. FW//RADAR last checked Infinite Digits's official page on 11 Sep 2026.
How do I update the Infinite Digits EZEPTOCORE?
Connect USB-C cable to device. Hold BOOTSEL button (near USB-C jack). Full instructions on Infinite Digits's official firmware page.
Where can I download Infinite Digits EZEPTOCORE firmware and drivers?
Directly from Infinite Digits's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →