Device/4 min read/Zenner team

Cronus Zen Memory Slots Explained

By Zenner team

Cronus Zen has eight memory slots, and programming can compact occupied scripts toward the earliest available slots, so Zenner preserves non-target slots before flashing.

Last updated 2026-07-27

Slot Basics

Official Cronus documentation describes eight memory slots with a 32KB limit per slot. Scripts or profiles are assigned to those slots before programming the device.

Slot Safety Rules

  • Zenner reads occupied non-target slots before flashing.
  • If an occupied slot cannot be preserved, the install aborts before programming.
  • After flashing, Zenner reads the slot list again to verify the install.

Frequently Asked Questions

Why did my script move to another slot?

Official programming behavior can compact the final layout toward earlier slots.

How many scripts fit on a Cronus Zen?

A Cronus Zen has eight memory slots, but each script still has to fit inside the slot size limit.

Does Zenner preserve existing scripts?

Zenner attempts to preserve occupied non-target slots and aborts if preservation cannot be verified.